1. The document investigates the mechanical and metallurgical properties of friction stir welded joints of AA1100 aluminum alloy fabricated at different tool rotational speeds and material positions.
2. Tensile tests, microhardness tests, and optical/SEM microscopy of the welds were used to evaluate the mechanical properties and microstructure of the joints.
3. The results showed that joints welded at 1200 rpm had the optimum properties, with smooth weld surfaces and good tensile strength, yield strength, and elongation. Microhardness was also highest at this welding condition.
Optimization of Process Parameters of Friction Stir Welding for Similar He-30...IRJET Journal
This document discusses optimization of process parameters for friction stir welding of similar HE-30 aluminium alloy. It begins with an abstract that describes the friction stir welding process and the objectives of using Taguchi methods to optimize welding parameters to achieve high tensile strength. It then provides background on friction stir welding, describing how it is a solid-state welding process that uses a rotating tool to plasticize materials without melting. The document discusses how process parameters like rotational speed, travel speed, and tool geometry can affect joint quality and properties. It aims to use an experimental design and analysis approach to determine the optimum welding conditions for high tensile strength when joining HE-30 aluminium alloy.
Modeling and Simulation of Base Plate of Friction Stir Welding-Advanced Weldi...ijsrd.com
Friction stir processing is an emerging technique based on the principles of friction stir welding (FSW). It is a solid-state joining method that is energy efficient, environmentally friendly, and versatile. It is considered by many to be the most significant development in metal joining in a decade. The basic concept of friction stir processing is remarkably simple. A rotating tool with pin and shoulder is inserted in the material to be joined, and traversed along the line of interest. The heating is localized, and is generated by friction between the tool and the work piece, with additional adiabatic heating from metal deformation. A processed zone is produced by movement of material from the front of the pin to the back of the pin.
An Experimental Investigation on Mechanical Properties of Friction Stir Weldi...IRJET Journal
The document presents an experimental investigation on the mechanical properties of friction stir welding of aluminum alloy 6061-T6 and brass IS319 using EN19 tools with circular and taper profiles. Friction stir welding is a solid-state joining process that generates heat through friction between the rotating tool and workpieces.
The experiment was conducted on a milling machine using EN19 tools with circular and taper profiles to weld aluminum and brass plates. The welded joints were tested for tensile strength, yield strength, and hardness. The taper profile tool achieved a tensile strength of 108.5 N/mm2, yield strength of 76.05 N/mm2, and Vickers hardness of 51.73 HV. The circular
IRJET - Characteristics of Butt Joint Produced by Friction Stir Welding ProcessIRJET Journal
The document discusses characteristics of butt joints produced using friction stir welding (FSW) of aluminum alloys. It investigates the effects of various FSW process parameters on the mechanical properties and microstructure of the welded joints. Specifically, it examines rotational speed, transverse speed, and tool geometry. Joints of aluminum alloy AA5083 were welded and tested in tension, hardness, impact, and corrosion to analyze properties. The results showed that process parameters significantly affected the weld strength and microstructure. Defect-free joints with optimal mechanical properties could be produced using appropriate FSW conditions.
Optimization of friction stir welding process parameter using taguchi method ...eSAT Journals
Abstract Friction stir welding (FSW) is relatively new solid state joining process. This joining technique is energy efficient, environment friendly and versatile. Welding is a multiinput-output process in which quality of welded joint is depends upon a input parameter. Therefore optimization of input process parameter is required to achieve good quality of welding. There are so many methods of optimization in which Taguchi method and Response surface methodology are selected for optimization of process parameter. In this review the effect of process parameter on welded joint studied and optimizes the parameter by using Taguchi method and Response surface methodology. The study of Friction stir welding of Aluminium alloy and High density polyethylene sheets shows the improvement in welded joint quality by optimization of process parameter. The main process parameters which affect the strength of welded joint is tool rotational speed, welding speed, axial force and tool pin profile. Keywords: Friction stir welding (FSW), Optimization, Taguchi Method Response surface Methodology Prediction models
Study and Analysis of the Fatigue Behaviour of Friction Stir Butt Welded Dis...IRJET Journal
1) The study analyzed the tensile strength and fatigue behavior of friction stir butt welded dissimilar aluminum alloys AA6082 and AA5754.
2) Fatigue tests showed the dissimilar welds had lower tensile strength and fatigue strength than the base materials AA6082 and AA5754, but comparable strength to AA5754.
3) The fatigue performance of the AA6082 and AA5754 friction stir welded joints showed a shallower stress-life (S-N) curve with improved fatigue performance at lower stress ranges.
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Publishing House
This document describes a numerical simulation of friction stir butt welding for AZ91 magnesium alloy. A 3D nonlinear thermo-mechanical finite element model was developed using ABAQUS to predict temperature distribution and evaluate mechanical properties during the welding process. The model considers heat generation due to friction between the rotating tool and workpiece. Results show the maximum temperature reached was 483°C and residual stress was highest along the weld path. Pressure was also highest in the weld midpoint. Graphs of internal energy and strain energy over time were produced from the simulation results.
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Journals
Abstract Friction Stir Welding (FSW) is a solid state welding process. In particular, it can be used to join high-strength aerospace magnesium and other metallic alloys that are hard to weld by conventional fusion welding. It was performed on 4 mm thickness AZ91 Magnesium alloy. Magnesium alloy have more advantage than aluminum such as light weight, softer, tendency to bend easily, cost effective in terms of energy requirements so magnesium alloy has selected in this FSW technique. In friction stir welding (FSW), a momentous residual stress is present in weld due to complex nature of fixturing system compared to fusion welding. These residual stresses can affect properties of welded components during service. Therefore, for estimating magnitude of welding residual stresses and their nature of distribution along with thermal history, a three dimensional non- linear thermo-mechanical finite element (NLTMFE) model using ABAQUS/ CAE package was developed for butt welded magnesium alloy AZ91. The objective of this work is to predict the temperature distribution in both materials and evaluate the mechanical properties during the friction stir welding on magnesium alloy. Keywords: Fsw, Nltmfe, Abaqus, Cae, Az91.
Optimization of Process Parameters of Friction Stir Welding for Similar He-30...IRJET Journal
This document discusses optimization of process parameters for friction stir welding of similar HE-30 aluminium alloy. It begins with an abstract that describes the friction stir welding process and the objectives of using Taguchi methods to optimize welding parameters to achieve high tensile strength. It then provides background on friction stir welding, describing how it is a solid-state welding process that uses a rotating tool to plasticize materials without melting. The document discusses how process parameters like rotational speed, travel speed, and tool geometry can affect joint quality and properties. It aims to use an experimental design and analysis approach to determine the optimum welding conditions for high tensile strength when joining HE-30 aluminium alloy.
Modeling and Simulation of Base Plate of Friction Stir Welding-Advanced Weldi...ijsrd.com
Friction stir processing is an emerging technique based on the principles of friction stir welding (FSW). It is a solid-state joining method that is energy efficient, environmentally friendly, and versatile. It is considered by many to be the most significant development in metal joining in a decade. The basic concept of friction stir processing is remarkably simple. A rotating tool with pin and shoulder is inserted in the material to be joined, and traversed along the line of interest. The heating is localized, and is generated by friction between the tool and the work piece, with additional adiabatic heating from metal deformation. A processed zone is produced by movement of material from the front of the pin to the back of the pin.
An Experimental Investigation on Mechanical Properties of Friction Stir Weldi...IRJET Journal
The document presents an experimental investigation on the mechanical properties of friction stir welding of aluminum alloy 6061-T6 and brass IS319 using EN19 tools with circular and taper profiles. Friction stir welding is a solid-state joining process that generates heat through friction between the rotating tool and workpieces.
The experiment was conducted on a milling machine using EN19 tools with circular and taper profiles to weld aluminum and brass plates. The welded joints were tested for tensile strength, yield strength, and hardness. The taper profile tool achieved a tensile strength of 108.5 N/mm2, yield strength of 76.05 N/mm2, and Vickers hardness of 51.73 HV. The circular
IRJET - Characteristics of Butt Joint Produced by Friction Stir Welding ProcessIRJET Journal
The document discusses characteristics of butt joints produced using friction stir welding (FSW) of aluminum alloys. It investigates the effects of various FSW process parameters on the mechanical properties and microstructure of the welded joints. Specifically, it examines rotational speed, transverse speed, and tool geometry. Joints of aluminum alloy AA5083 were welded and tested in tension, hardness, impact, and corrosion to analyze properties. The results showed that process parameters significantly affected the weld strength and microstructure. Defect-free joints with optimal mechanical properties could be produced using appropriate FSW conditions.
Optimization of friction stir welding process parameter using taguchi method ...eSAT Journals
Abstract Friction stir welding (FSW) is relatively new solid state joining process. This joining technique is energy efficient, environment friendly and versatile. Welding is a multiinput-output process in which quality of welded joint is depends upon a input parameter. Therefore optimization of input process parameter is required to achieve good quality of welding. There are so many methods of optimization in which Taguchi method and Response surface methodology are selected for optimization of process parameter. In this review the effect of process parameter on welded joint studied and optimizes the parameter by using Taguchi method and Response surface methodology. The study of Friction stir welding of Aluminium alloy and High density polyethylene sheets shows the improvement in welded joint quality by optimization of process parameter. The main process parameters which affect the strength of welded joint is tool rotational speed, welding speed, axial force and tool pin profile. Keywords: Friction stir welding (FSW), Optimization, Taguchi Method Response surface Methodology Prediction models
Study and Analysis of the Fatigue Behaviour of Friction Stir Butt Welded Dis...IRJET Journal
1) The study analyzed the tensile strength and fatigue behavior of friction stir butt welded dissimilar aluminum alloys AA6082 and AA5754.
2) Fatigue tests showed the dissimilar welds had lower tensile strength and fatigue strength than the base materials AA6082 and AA5754, but comparable strength to AA5754.
3) The fatigue performance of the AA6082 and AA5754 friction stir welded joints showed a shallower stress-life (S-N) curve with improved fatigue performance at lower stress ranges.
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Publishing House
This document describes a numerical simulation of friction stir butt welding for AZ91 magnesium alloy. A 3D nonlinear thermo-mechanical finite element model was developed using ABAQUS to predict temperature distribution and evaluate mechanical properties during the welding process. The model considers heat generation due to friction between the rotating tool and workpiece. Results show the maximum temperature reached was 483°C and residual stress was highest along the weld path. Pressure was also highest in the weld midpoint. Graphs of internal energy and strain energy over time were produced from the simulation results.
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Journals
Abstract Friction Stir Welding (FSW) is a solid state welding process. In particular, it can be used to join high-strength aerospace magnesium and other metallic alloys that are hard to weld by conventional fusion welding. It was performed on 4 mm thickness AZ91 Magnesium alloy. Magnesium alloy have more advantage than aluminum such as light weight, softer, tendency to bend easily, cost effective in terms of energy requirements so magnesium alloy has selected in this FSW technique. In friction stir welding (FSW), a momentous residual stress is present in weld due to complex nature of fixturing system compared to fusion welding. These residual stresses can affect properties of welded components during service. Therefore, for estimating magnitude of welding residual stresses and their nature of distribution along with thermal history, a three dimensional non- linear thermo-mechanical finite element (NLTMFE) model using ABAQUS/ CAE package was developed for butt welded magnesium alloy AZ91. The objective of this work is to predict the temperature distribution in both materials and evaluate the mechanical properties during the friction stir welding on magnesium alloy. Keywords: Fsw, Nltmfe, Abaqus, Cae, Az91.
Experimental Investigation of Friction Stir Welding Of Aluminum Aa6061 Alloy ...iosrjce
The combination of wrought aluminum-magnesium-silicon alloy confirming to aluminum AA6061
alloy widely accepted because of light weight fabrication structures, high strength to weight ratio and good
corrosion resistance. Friction Stir Welding(FSW) process is an emerging solid state joining process in which
the material that is being welded does not melt and recast when compared to fusion welding process that are
routinely used for joining structural aluminum alloys. In this FSW process a non consumable tool is used to
generate frictional heat in the abutting surfaces. Experiments for surface roughness, Rockwell hardness and
tensile tests are carried out and reported in this paper. The base material used for friction stir welding is
aluminum AA 6061 alloy. Surface roughness values decreases with the increase in speed of the tool and also
there exists an optimum speed to have the good surface finish. Hardness increases with decrease in speed of the
tool but increases after reaching a certain value. Tensile strength increases with the increase in speed of the
tool and also there exists an optimum values for particular feed of the tool.
Experimental Investigations of Friction Stir Welding (FSW) on Al 6061 : A Cas...IRJET Journal
This document summarizes an experimental study on friction stir welding (FSW) of aluminum alloy 6061. The study used a milling machine to conduct FSW trials with different tool pin profiles at various welding parameters. Initial trials failed due to tool breakage. Failure analysis found the main causes were tool material, rpm, and tool profile/vibrations. Modifying the tool to a tapered, threaded pin profile and increasing rpm to 1200 led to a successful weld with tensile strength of 66MPa, demonstrating FSW is possible on conventional machine tools. The study explored using FSW to join common aluminum alloys for applications like automotive and construction.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Experimental Analysis to Optimize parameters of Friction Stir Welding of Alum...IJSRD
This document summarizes research on optimizing parameters for friction stir welding (FSW) of aluminum alloys. It first provides background on FSW and discusses how parameters like tool rotation speed, tilt angle, and travel speed affect weld strength. The document then reviews several other studies investigating these parameters. One study found that a tool rotation speed of 900 rpm, travel speed of 75 mm/min, and axial force of 3 kN produced the highest tensile strength for an aluminum alloy. Another identified tilt angle as the most influential parameter for weld strength. Finally, the document describes using the Taguchi method to optimize FSW parameters for aluminum alloy, identifying tilt angle as most significant. It concludes that tool rotation speed, travel
Effect of welding parameters and tool shape on properties of friction stir we...IJERA Editor
Friction stir welding (FSW) is a widely used solid state joining process for soft materials such as aluminium alloys because it avoids many of the common problems of fusion welding. It has many benefits when applied to welding of aluminum alloys. FSW process parameters such as welding speed, rotational speed and tool geometry play vital roles in the weld quality. The aim of this research is to investigate the effects of different welding speeds, rotational speeds and tool pin profile on the weld quality of a AA6061 aluminum alloy. A friction stir welding tool consists of rotating shoulder and pin that heats the working piece by friction and moves a softened alloy around it to form a joint. In this research work the effect of the tool shape and welding parameters (rotating speed and welding speed) on the mechanical properties of an aluminium plates will be investigated experimentally. The induced heat during the welding process played the main role in the mechanical and appearance of the joints, which is related to the welding parameters.
Friction stir welding of aluminium 5086 alloyseSAT Journals
Abstract Friction Stir welding (FSW) is a solid state attachment method used for welding of metals of same and different metals. This process of friction stir welding (FSW) is widely using for the reason it can produces sound welds and doesn't have common issues like solidification and liquefaction cracking connected to the fusion techniques. The Friction stir welding of Al 5086 alloys had been commercialized and up to date interest is targeted on change of integrity with different metals. Thus on commercialize this method, analysis studies are required to characterize. particularly, FSW has impressed researchers to aim modification of integrity different metals like aluminum 5086 that differ in properties and sound welds with none or restricted inter metallic bonding of components has been done. In this paper we have to make a research on the current analysis state of FSW between aluminum 5086 with attention on the resulting welding and tensile strength, microstructure, elongation and the tools are used to produce the welds and also an insight into future analysis during this process of study the project of friction welding. By this process in our project we got an idea of going to maintain the rotational speed (rpm) 450 to 1400 and also by changing welding rpm (speed). This friction stir welding is used in nasa for joining of two totally different or same types of materials. Keywords: Friction stir welding, Tool, Welding parameters, and Mechanical properties etc…
Experimental Investigation for Mechanical Properties of Aluminium Alloy Al 60...IRJET Journal
This document presents an experimental investigation of the mechanical properties of friction stir welded aluminum alloy Al 6061 joints considering different friction stir welding parameters. Specifically, it examines the effects of tool shape (taper or threaded), welding speed, and feed rate on the tensile strength, impact toughness, and microhardness of the welded joints. Experiments were conducted according to a Taguchi L8 orthogonal array design of experiments. Results indicated that welding speed had the greatest influence on tensile strength, feed rate most influenced impact toughness and microhardness, and the optimal parameters were a taper tool, 600 RPM welding speed, and 40 mm/min feed rate. These parameters produced joints with maximum mechanical property strengths.
IRJET- Effect of Al2O3 Nano-Particles on AA1060 Joints Fabricated by Friction...IRJET Journal
1) The document studies the effect of adding Al2O3 nanoparticles on the tensile strength of AA1060 aluminum alloy joints fabricated using friction stir welding (FSW).
2) Testing showed that FSW joints with nanoparticles had higher ultimate tensile strength than joints without nanoparticles. However, joints with nanoparticles also had reduced ductility.
3) The results indicated that maximum tensile strength was achieved at lower tool rotation speeds and lower traverse speeds, as these parameters generated less heat during welding. Both higher rotation and traverse speeds reduced tensile strength.
INVESTIGATION ON FRICTION STIR WELDING OF SIMILAR ALUMINIUM ALLOYS (AA6061) ...RenukaReddyVudumula
Friction Stir Welding (FSW) is the latest innovative and most complex process that is widely applied to the welding of lightweight alloys, such as aluminum alloys. this process provides the frictional heating and plastic deformation realized at the interaction between a non-consumable welding tool that rotates on the contact surfaces of the work-pieces. The welding tool is positioned vertically on the material and then moved at welding speed along the joint line.
The plasticized material is transferred behind the tool, forming a welded joint.
In this research, a new approach for friction-stir welding of similar alloys of aluminum alloy 6061 and using cerium particles. The weld mechanical properties of the welds were investigated in this research. The effects of friction-stir welding process parameters such as tool rotational and traverse speeds were also examined. Mechanical properties of the welded parts will be examined by using tensile test, Impact test, and Hardness test.
Investigation of Effect of Process Parameters on Maximum Temperature during F...IJSRD
In case of friction stir welding, the maximum temperature along the weld line within appropriate range at tool workpiece interface is responsible for quality of welded joint. Through this paper, an attempt is made to establish a relationship between the input process parameters and the maximum temperature along the weld line during friction stir welding of aluminium alloy AA-7075. The design of pre-experimental simulation has been performed in accordance with full factorial technique. The simulation of friction stir welding has been performed by varying input parameters, tool rotational speed and welding speed. The analysis of variance (ANOVA) is used to investigate the effect of input parameters on maximum temperature during friction stir welding. A correlation was established between input parameters and maximum temperature by multiple regression lines. This study indicates that the tool rotational speed is the main input parameter that has high statistical influence on maximum temperature along the weld line during friction stir welding of aluminium alloy AA-7075.
Optimization of friction stir welding parameters for joining aluminum alloy 6...eSAT Journals
Abstract This investigation represents the effects of parameters of friction stir welding on tensile strength and hardness during welding of Aluminium Alloy 6105. A fabricated FSWM set up was used for welding. A high carbon steel tool having 18 mm shoulder diameter and 5.5 mm pin diameter has been used. It was noted that for the friction stir welding of aluminium alloy 6105, maximum tensile strength is 0.0912 KN/mm2, which is obtain at 1250 rpm tool rotation speed, 25 mm/min welding speed and 00 tilt angle. It was also noted that the maximum vicker hardness is 65.7 which is obtain at 1550 rpm rotational speed, 35 mm/min welding speed and 0.50 tilt angle. Keywords: Friction stir welding, Aluminium alloy 6105, tensile strength, hardness, Taguchi L9 orthogonal array
This document discusses friction stir processing (FSP), a technique for modifying the microstructure of metals near the surface. FSP uses a rotating tool to generate heat and plasticize the metal. As the tool traverses the material, it leaves behind a fine-grained microstructure. The document outlines the working principle of FSP and its applications, including fabricating surface composites, refining cast alloys, and producing superplasticity. FSP effectively improves mechanical properties like strength and ductility compared to the as-cast condition.
The document summarizes an experimental analysis of weld strength in friction stir welding of different grades of aluminum alloy using different tool geometries. Specifically, it analyzes welding 6061, 7005, and 8011 aluminum alloys with a cylindrical tool and tapered threaded tool. Tensile testing found that the tapered threaded tool produced stronger welds across all aluminum grades compared to the cylindrical tool, with strengths increasing up to 30%. This is because the threaded tool generates more friction and distributes the metal more evenly in the weld zone. Visual analysis also found the threaded tool produced better surface finish quality than the cylindrical tool.
This document presents an optimization study of friction stir welding process parameters for aluminum alloys to achieve maximum tensile strength. Experiments were conducted using Taguchi's design of experiments method to evaluate the effects of rotational speed, tool tilt angle, and travel speed on joint strength. Analysis of variance revealed that tool tilt angle was the most influential parameter, contributing 47.39% to tensile strength, followed by travel speed at 42.18%. The optimal parameters predicted were 1300 rpm rotational speed, 1° tool tilt angle, and 60 mm/min travel speed, which were expected to yield a maximum tensile strength of 285 MPa. Experimental validation of these optimal parameters produced a joint strength of 288 MPa, close to the predicted value.
FRICTION STIR WELDING OF ALUMINIUM ALLOYS - A REVIEWIAEME Publication
This welding is a novel process used to join metallic alloys. Friction stir welding is in vogue in aerospace, automotive and other industrial establishments for connecting alloys like aluminum, magnesium and copper. Rotational speed, welding speed and the angle of attack are important in the process of FSW. They analyze the weld quality. FSW produces stronger weld joint then the original material in selected parameters. FSW is a solid-state process, where metal is not melted uses a cylindrical shouldered tool with a profiled pin rotated and gradually plunged into the weld joint between two metal parts of plate or sheet that are to be welded together.
Finite element modeling and bending stress analysis of non standard spur geareSAT Journals
Abstract Gears are toothed wheels, transmitting power and motion from one shaft to another by means of successive engagement of teeth. Having a higher degree of reliability, compactness, high velocity ratio and finally able to transmit motion at a very low velocity, gears are gaining importance as the most efficient means for transmitting power. A gearing system is susceptible to problems such as interference, backlash and undercut. The contact portions of tooth profiles that are not conjugate is called interference. Furthermore due to interference and in the absence of undercut, the involute tip or face of the driven gear tends to dig out the non-involute flank of the driver. The response of a spur gear and its wear is an engineering problem that has not been completely overcome yet. With the perspective of overcoming such defects and for increase the efficiency of gearing system, the use of a non-standard spur gear i.e., an asymmetric spur gear having different pressure angles for drive and coast side of the tooth comes into picture. This paper emphasis on the generation of an asymmetric spur gear tooth using modeling software and bending stress at the root of Asymmetric spur gear tooth is estimated by finite element analysis using ANSYS software and results were compared with the standard spur gear tooth. Keywords: Asymmetric spur gear, Bending stress, Finite element method, Pressure angle
Friction Stir Welding of Magnesium Alloys - A Reviewmsejjournal
The selection of proper material for each application is a critical part in every manufacturing industry.
In the field of aerospace and automobile the major requirement is light weight yet strong material which
can possess every aspect of design parameters. Magnesium alloy one of the major raw material used in
these industries due to its light weight, good thermal conductivity etc. Also Friction stir welding is the
joining process that is being used in these industries as it is a solid state joining process. This paper
gives a detailed review about Friction Stir welding of Mg alloys. The review period is considered from
2009 to 2015.A detailed review about Friction stir welding of Mg alloys has not been done before in this
manner. This review work may be a ready reference for subsequent researchers.
TENSILE BEHAVIOUR OF ALUMINIUM PLATES (5083) WELDED BY FRICTION STIR WELDING IAEME Publication
Using arc welding, gas welding and other welding process, it is very difficult to weld the aluminum alloys. Friction stir welding, on the other hand, can be used to join most Al alloys and
better surface finishing is achieved. Although the work piece does heat up during friction stir weld, the temperature does not reach the melting point.
This document summarizes Mitchell Smith's undergraduate research project on friction stir welding of similar and dissimilar metal alloys. Smith conducted trial welds of aluminum alloys to understand the friction stir welding process and machine settings. Welds were made of similar aluminum alloys and dissimilar aluminum-copper alloys. Challenges included preventing separation of metal pieces during welding. Further tests are needed to characterize the welds and properties of the welded metals, including microstructural analysis, tensile tests, and impact tests. Continued research on welding nano-reinforced metals could expand applications of friction stir welding in fields like nuclear engineering.
STRESS & STRAIN ANALYSIS IN FRICTION STIR WELDING WITH THE ANSYS TOOL(ppt)niajkumar
This document discusses stress and strain analysis of friction stir welding using ANSYS software. It describes friction stir welding as a solid-state welding technique that joins metals without filler material below the melting point. The document outlines the working process, parameters, objectives to analyze stresses in the welding process using ANSYS, and presents results on equivalent von-Mises stress and elastic strain from the predicted model. It concludes that friction stir welding produces stronger welds than other welding methods based on the stress analysis results.
This document summarizes a study that investigated the mechanical and metallurgical properties of friction stir welded AA1100 aluminum alloy joints. Different welding parameters were tested, including tool rotation speed (800-1400 rpm) and material positioning (advancing vs. retreating side). Microhardness, tensile, and fracture surface tests were used to evaluate the mechanical properties. Optical and SEM microscopy were used to analyze the microstructural evolution. The goal was to understand how processing parameters affect properties and defect development in similar AA1100 alloy joints.
The document analyzes the mechanical properties of friction stir welded aluminum alloy AA6063 plates compared to metal inert gas arc welded AA6063 plates. Tensile strength and Rockwell hardness tests were performed on specimens cut from the welded plates. The results showed that the friction stir welded plates had superior tensile strength and hardness compared to the metal inert gas welded plates. Specifically, the ultimate tensile strength was higher and elongation was greater for friction stir welded specimens. Additionally, the Rockwell hardness values were higher for friction stir welded plates compared to metal inert gas welded plates. Therefore, the study demonstrated that friction stir welding can improve the quality and mechanical properties of welded aluminum alloy joints over conventional
Experimental Investigation of Friction Stir Welding Of Aluminum Aa6061 Alloy ...iosrjce
The combination of wrought aluminum-magnesium-silicon alloy confirming to aluminum AA6061
alloy widely accepted because of light weight fabrication structures, high strength to weight ratio and good
corrosion resistance. Friction Stir Welding(FSW) process is an emerging solid state joining process in which
the material that is being welded does not melt and recast when compared to fusion welding process that are
routinely used for joining structural aluminum alloys. In this FSW process a non consumable tool is used to
generate frictional heat in the abutting surfaces. Experiments for surface roughness, Rockwell hardness and
tensile tests are carried out and reported in this paper. The base material used for friction stir welding is
aluminum AA 6061 alloy. Surface roughness values decreases with the increase in speed of the tool and also
there exists an optimum speed to have the good surface finish. Hardness increases with decrease in speed of the
tool but increases after reaching a certain value. Tensile strength increases with the increase in speed of the
tool and also there exists an optimum values for particular feed of the tool.
Experimental Investigations of Friction Stir Welding (FSW) on Al 6061 : A Cas...IRJET Journal
This document summarizes an experimental study on friction stir welding (FSW) of aluminum alloy 6061. The study used a milling machine to conduct FSW trials with different tool pin profiles at various welding parameters. Initial trials failed due to tool breakage. Failure analysis found the main causes were tool material, rpm, and tool profile/vibrations. Modifying the tool to a tapered, threaded pin profile and increasing rpm to 1200 led to a successful weld with tensile strength of 66MPa, demonstrating FSW is possible on conventional machine tools. The study explored using FSW to join common aluminum alloys for applications like automotive and construction.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Experimental Analysis to Optimize parameters of Friction Stir Welding of Alum...IJSRD
This document summarizes research on optimizing parameters for friction stir welding (FSW) of aluminum alloys. It first provides background on FSW and discusses how parameters like tool rotation speed, tilt angle, and travel speed affect weld strength. The document then reviews several other studies investigating these parameters. One study found that a tool rotation speed of 900 rpm, travel speed of 75 mm/min, and axial force of 3 kN produced the highest tensile strength for an aluminum alloy. Another identified tilt angle as the most influential parameter for weld strength. Finally, the document describes using the Taguchi method to optimize FSW parameters for aluminum alloy, identifying tilt angle as most significant. It concludes that tool rotation speed, travel
Effect of welding parameters and tool shape on properties of friction stir we...IJERA Editor
Friction stir welding (FSW) is a widely used solid state joining process for soft materials such as aluminium alloys because it avoids many of the common problems of fusion welding. It has many benefits when applied to welding of aluminum alloys. FSW process parameters such as welding speed, rotational speed and tool geometry play vital roles in the weld quality. The aim of this research is to investigate the effects of different welding speeds, rotational speeds and tool pin profile on the weld quality of a AA6061 aluminum alloy. A friction stir welding tool consists of rotating shoulder and pin that heats the working piece by friction and moves a softened alloy around it to form a joint. In this research work the effect of the tool shape and welding parameters (rotating speed and welding speed) on the mechanical properties of an aluminium plates will be investigated experimentally. The induced heat during the welding process played the main role in the mechanical and appearance of the joints, which is related to the welding parameters.
Friction stir welding of aluminium 5086 alloyseSAT Journals
Abstract Friction Stir welding (FSW) is a solid state attachment method used for welding of metals of same and different metals. This process of friction stir welding (FSW) is widely using for the reason it can produces sound welds and doesn't have common issues like solidification and liquefaction cracking connected to the fusion techniques. The Friction stir welding of Al 5086 alloys had been commercialized and up to date interest is targeted on change of integrity with different metals. Thus on commercialize this method, analysis studies are required to characterize. particularly, FSW has impressed researchers to aim modification of integrity different metals like aluminum 5086 that differ in properties and sound welds with none or restricted inter metallic bonding of components has been done. In this paper we have to make a research on the current analysis state of FSW between aluminum 5086 with attention on the resulting welding and tensile strength, microstructure, elongation and the tools are used to produce the welds and also an insight into future analysis during this process of study the project of friction welding. By this process in our project we got an idea of going to maintain the rotational speed (rpm) 450 to 1400 and also by changing welding rpm (speed). This friction stir welding is used in nasa for joining of two totally different or same types of materials. Keywords: Friction stir welding, Tool, Welding parameters, and Mechanical properties etc…
Experimental Investigation for Mechanical Properties of Aluminium Alloy Al 60...IRJET Journal
This document presents an experimental investigation of the mechanical properties of friction stir welded aluminum alloy Al 6061 joints considering different friction stir welding parameters. Specifically, it examines the effects of tool shape (taper or threaded), welding speed, and feed rate on the tensile strength, impact toughness, and microhardness of the welded joints. Experiments were conducted according to a Taguchi L8 orthogonal array design of experiments. Results indicated that welding speed had the greatest influence on tensile strength, feed rate most influenced impact toughness and microhardness, and the optimal parameters were a taper tool, 600 RPM welding speed, and 40 mm/min feed rate. These parameters produced joints with maximum mechanical property strengths.
IRJET- Effect of Al2O3 Nano-Particles on AA1060 Joints Fabricated by Friction...IRJET Journal
1) The document studies the effect of adding Al2O3 nanoparticles on the tensile strength of AA1060 aluminum alloy joints fabricated using friction stir welding (FSW).
2) Testing showed that FSW joints with nanoparticles had higher ultimate tensile strength than joints without nanoparticles. However, joints with nanoparticles also had reduced ductility.
3) The results indicated that maximum tensile strength was achieved at lower tool rotation speeds and lower traverse speeds, as these parameters generated less heat during welding. Both higher rotation and traverse speeds reduced tensile strength.
INVESTIGATION ON FRICTION STIR WELDING OF SIMILAR ALUMINIUM ALLOYS (AA6061) ...RenukaReddyVudumula
Friction Stir Welding (FSW) is the latest innovative and most complex process that is widely applied to the welding of lightweight alloys, such as aluminum alloys. this process provides the frictional heating and plastic deformation realized at the interaction between a non-consumable welding tool that rotates on the contact surfaces of the work-pieces. The welding tool is positioned vertically on the material and then moved at welding speed along the joint line.
The plasticized material is transferred behind the tool, forming a welded joint.
In this research, a new approach for friction-stir welding of similar alloys of aluminum alloy 6061 and using cerium particles. The weld mechanical properties of the welds were investigated in this research. The effects of friction-stir welding process parameters such as tool rotational and traverse speeds were also examined. Mechanical properties of the welded parts will be examined by using tensile test, Impact test, and Hardness test.
Investigation of Effect of Process Parameters on Maximum Temperature during F...IJSRD
In case of friction stir welding, the maximum temperature along the weld line within appropriate range at tool workpiece interface is responsible for quality of welded joint. Through this paper, an attempt is made to establish a relationship between the input process parameters and the maximum temperature along the weld line during friction stir welding of aluminium alloy AA-7075. The design of pre-experimental simulation has been performed in accordance with full factorial technique. The simulation of friction stir welding has been performed by varying input parameters, tool rotational speed and welding speed. The analysis of variance (ANOVA) is used to investigate the effect of input parameters on maximum temperature during friction stir welding. A correlation was established between input parameters and maximum temperature by multiple regression lines. This study indicates that the tool rotational speed is the main input parameter that has high statistical influence on maximum temperature along the weld line during friction stir welding of aluminium alloy AA-7075.
Optimization of friction stir welding parameters for joining aluminum alloy 6...eSAT Journals
Abstract This investigation represents the effects of parameters of friction stir welding on tensile strength and hardness during welding of Aluminium Alloy 6105. A fabricated FSWM set up was used for welding. A high carbon steel tool having 18 mm shoulder diameter and 5.5 mm pin diameter has been used. It was noted that for the friction stir welding of aluminium alloy 6105, maximum tensile strength is 0.0912 KN/mm2, which is obtain at 1250 rpm tool rotation speed, 25 mm/min welding speed and 00 tilt angle. It was also noted that the maximum vicker hardness is 65.7 which is obtain at 1550 rpm rotational speed, 35 mm/min welding speed and 0.50 tilt angle. Keywords: Friction stir welding, Aluminium alloy 6105, tensile strength, hardness, Taguchi L9 orthogonal array
This document discusses friction stir processing (FSP), a technique for modifying the microstructure of metals near the surface. FSP uses a rotating tool to generate heat and plasticize the metal. As the tool traverses the material, it leaves behind a fine-grained microstructure. The document outlines the working principle of FSP and its applications, including fabricating surface composites, refining cast alloys, and producing superplasticity. FSP effectively improves mechanical properties like strength and ductility compared to the as-cast condition.
The document summarizes an experimental analysis of weld strength in friction stir welding of different grades of aluminum alloy using different tool geometries. Specifically, it analyzes welding 6061, 7005, and 8011 aluminum alloys with a cylindrical tool and tapered threaded tool. Tensile testing found that the tapered threaded tool produced stronger welds across all aluminum grades compared to the cylindrical tool, with strengths increasing up to 30%. This is because the threaded tool generates more friction and distributes the metal more evenly in the weld zone. Visual analysis also found the threaded tool produced better surface finish quality than the cylindrical tool.
This document presents an optimization study of friction stir welding process parameters for aluminum alloys to achieve maximum tensile strength. Experiments were conducted using Taguchi's design of experiments method to evaluate the effects of rotational speed, tool tilt angle, and travel speed on joint strength. Analysis of variance revealed that tool tilt angle was the most influential parameter, contributing 47.39% to tensile strength, followed by travel speed at 42.18%. The optimal parameters predicted were 1300 rpm rotational speed, 1° tool tilt angle, and 60 mm/min travel speed, which were expected to yield a maximum tensile strength of 285 MPa. Experimental validation of these optimal parameters produced a joint strength of 288 MPa, close to the predicted value.
FRICTION STIR WELDING OF ALUMINIUM ALLOYS - A REVIEWIAEME Publication
This welding is a novel process used to join metallic alloys. Friction stir welding is in vogue in aerospace, automotive and other industrial establishments for connecting alloys like aluminum, magnesium and copper. Rotational speed, welding speed and the angle of attack are important in the process of FSW. They analyze the weld quality. FSW produces stronger weld joint then the original material in selected parameters. FSW is a solid-state process, where metal is not melted uses a cylindrical shouldered tool with a profiled pin rotated and gradually plunged into the weld joint between two metal parts of plate or sheet that are to be welded together.
Finite element modeling and bending stress analysis of non standard spur geareSAT Journals
Abstract Gears are toothed wheels, transmitting power and motion from one shaft to another by means of successive engagement of teeth. Having a higher degree of reliability, compactness, high velocity ratio and finally able to transmit motion at a very low velocity, gears are gaining importance as the most efficient means for transmitting power. A gearing system is susceptible to problems such as interference, backlash and undercut. The contact portions of tooth profiles that are not conjugate is called interference. Furthermore due to interference and in the absence of undercut, the involute tip or face of the driven gear tends to dig out the non-involute flank of the driver. The response of a spur gear and its wear is an engineering problem that has not been completely overcome yet. With the perspective of overcoming such defects and for increase the efficiency of gearing system, the use of a non-standard spur gear i.e., an asymmetric spur gear having different pressure angles for drive and coast side of the tooth comes into picture. This paper emphasis on the generation of an asymmetric spur gear tooth using modeling software and bending stress at the root of Asymmetric spur gear tooth is estimated by finite element analysis using ANSYS software and results were compared with the standard spur gear tooth. Keywords: Asymmetric spur gear, Bending stress, Finite element method, Pressure angle
Friction Stir Welding of Magnesium Alloys - A Reviewmsejjournal
The selection of proper material for each application is a critical part in every manufacturing industry.
In the field of aerospace and automobile the major requirement is light weight yet strong material which
can possess every aspect of design parameters. Magnesium alloy one of the major raw material used in
these industries due to its light weight, good thermal conductivity etc. Also Friction stir welding is the
joining process that is being used in these industries as it is a solid state joining process. This paper
gives a detailed review about Friction Stir welding of Mg alloys. The review period is considered from
2009 to 2015.A detailed review about Friction stir welding of Mg alloys has not been done before in this
manner. This review work may be a ready reference for subsequent researchers.
TENSILE BEHAVIOUR OF ALUMINIUM PLATES (5083) WELDED BY FRICTION STIR WELDING IAEME Publication
Using arc welding, gas welding and other welding process, it is very difficult to weld the aluminum alloys. Friction stir welding, on the other hand, can be used to join most Al alloys and
better surface finishing is achieved. Although the work piece does heat up during friction stir weld, the temperature does not reach the melting point.
This document summarizes Mitchell Smith's undergraduate research project on friction stir welding of similar and dissimilar metal alloys. Smith conducted trial welds of aluminum alloys to understand the friction stir welding process and machine settings. Welds were made of similar aluminum alloys and dissimilar aluminum-copper alloys. Challenges included preventing separation of metal pieces during welding. Further tests are needed to characterize the welds and properties of the welded metals, including microstructural analysis, tensile tests, and impact tests. Continued research on welding nano-reinforced metals could expand applications of friction stir welding in fields like nuclear engineering.
STRESS & STRAIN ANALYSIS IN FRICTION STIR WELDING WITH THE ANSYS TOOL(ppt)niajkumar
This document discusses stress and strain analysis of friction stir welding using ANSYS software. It describes friction stir welding as a solid-state welding technique that joins metals without filler material below the melting point. The document outlines the working process, parameters, objectives to analyze stresses in the welding process using ANSYS, and presents results on equivalent von-Mises stress and elastic strain from the predicted model. It concludes that friction stir welding produces stronger welds than other welding methods based on the stress analysis results.
This document summarizes a study that investigated the mechanical and metallurgical properties of friction stir welded AA1100 aluminum alloy joints. Different welding parameters were tested, including tool rotation speed (800-1400 rpm) and material positioning (advancing vs. retreating side). Microhardness, tensile, and fracture surface tests were used to evaluate the mechanical properties. Optical and SEM microscopy were used to analyze the microstructural evolution. The goal was to understand how processing parameters affect properties and defect development in similar AA1100 alloy joints.
The document analyzes the mechanical properties of friction stir welded aluminum alloy AA6063 plates compared to metal inert gas arc welded AA6063 plates. Tensile strength and Rockwell hardness tests were performed on specimens cut from the welded plates. The results showed that the friction stir welded plates had superior tensile strength and hardness compared to the metal inert gas welded plates. Specifically, the ultimate tensile strength was higher and elongation was greater for friction stir welded specimens. Additionally, the Rockwell hardness values were higher for friction stir welded plates compared to metal inert gas welded plates. Therefore, the study demonstrated that friction stir welding can improve the quality and mechanical properties of welded aluminum alloy joints over conventional
A Review on Effect of Process Parameters on Tensile Strength of Friction Stir...ijsrd.com
This document summarizes research on the effect of process parameters on the tensile strength of friction stir welded aluminum alloys. It discusses how friction stir welding is a solid-state joining technique used in aerospace, automotive, and other industries. Process parameters like tool rotation speed, traverse speed, and axial force influence weld quality and tensile strength. Several studies investigated how adjusting these parameters affected strength of the welded joints. The optimum parameters were found to produce joints with tensile strengths close to the base metal. Overall, it was concluded that process parameters have a significant impact on weld strength and need to be optimized to achieve the highest possible strength.
The document presents a project review of microstructural testing of friction stir welded aluminum alloys 7075 and 5052. Key points:
- The project investigated the microstructure, microhardness, and residual stresses of friction stir welded 7075 and 5052 aluminum alloys.
- Testing included tensile testing, hardness testing, and optical microscopy to analyze the mechanical properties and microstructure of the welded joints.
- Results found the weld nugget zone had lower microhardness than the base material, and that higher tool rotational speeds resulted in lower microhardness values. Tensile testing also showed welded specimens had lower strength than unwelded specimens.
Effect Of Process Parameters On Mechanical Properties Of Friction Stir.Welded...IJERA Editor
Friction Stir Welding (FSW) is an advance joining process for different similar and dissimilar materials. It is
commonly used for joining of Aluminum alloys. However it is necessary to overcome some challenges for its
wide-spread uses. Tool design and the selection of process parameters are critical issues in the usage of this
process. This study focuses on the process parameters that is required for producing effective friction stir
welding of two similar aluminum alloys (AA6101T6 to AA6101T6) and dissimilar Aluminum alloys
(AA6101T6 alloy to AA6351T6) . Three different tool diameters such as 20 mm, 25 mm and 30 mm with three
different tool rotational speeds such as 600 rpm, 800 rpm and 1200 rpm have been used to weld the joints. The
welded samples were tested for mechanical properties as well as microstructure. It was observed that 30 mm
tool gives better weld quality for friction stir welding of similar aluminum alloy but 25 mm tool with 1200 rpm
rotational speed gave satisfactory weld quality for friction stir welding of dissimilar aluminum alloys. It is one
of the important welding process that can adopted for welding of aluminum alloys with excellent mechanical
properties. The results were confirmed by further experiments.
Study of Pitting Corrosion Behavior of FSW weldments of AA6101- T6 Aluminium ...IJERA Editor
Friction Stir Welding (FSW) is a promising solid state joining process widely used generally for Al alloys,
especially in aerospace, marine and automobile applications. In present work, the microstructure and corrosion
behavior of friction stir welded AA6101 T6 Al alloy is studied. The friction stir welding was carried using
vertical milling machine with different tool rotational speeds and welding speeds. The microstructure at weld
nugget or stir zone (SN), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal
were observed using optical microscopy. The corrosion tests of base alloy and welded joints were carried out in
3.5% NaCl solution at temperature of 30º C. Corrosion rate and emf were determined using cyclic polarization
measurement.
This document reviews the friction stir welding (FSW) process. FSW is a solid-state welding technique invented in 1991 that uses a rotating tool to generate heat and plasticize materials being joined, allowing them to bond without melting. It can weld materials like aluminum alloys that are difficult to weld using conventional fusion welding. The document discusses the principles of FSW, factors that affect weld microstructure and properties like tool parameters and heat flow, and summarizes several studies that examined the effects of FSW parameters and post-weld treatments on mechanical properties and microstructure of welded aluminum alloys.
Various Parameter Effects on Friction Stir Welding- A ReviewIRJET Journal
This document reviews the effects of various parameters on friction stir welding. It summarizes research that has studied how welding parameters like rotational speed, travel speed, tool geometry, and plunge depth impact the quality of friction stir welds. The document also reviews studies on double-sided friction stir welding and how parameters like shoulder diameter and plunge depth influence mechanical properties of the welded joints. Overall, the review examines how process parameters can be optimized in friction stir welding to produce welds without defects and with improved mechanical properties.
EFFECT OF TiO2 NANOPARTICLES ON FRICTION STIR WELDED JOINTS OF AA8011 ALUMINI...IRJET Journal
This document discusses a study investigating the effect of TiO2 nanoparticles on friction stir welded joints of AA8011 aluminum alloy. AA8011 aluminum alloy plates were friction stir welded with TiO2 nanoparticles added to the weld groove before welding. Various welding parameters were varied to evaluate their effect on the mechanical properties and microstructure of the welded joints. Tensile tests, impact tests, and microhardness tests were performed on the welded joints and results were compared to published data. The maximum tensile strength and impact value obtained were 52.98 MPa and 5.0 joules, respectively, at a rotational speed of 1400 RPM and welding speed of 25mm/min.
The document discusses multi response optimization of friction stir welding (FSW) parameters for aluminum alloy AA6105 using the Taguchi method. It first provides background on welding processes including FSW. It then discusses factors that affect FSW quality like rotational speed, welding speed, and tilt angle. The document proposes using an L9 orthogonal array experiment with three control factors and mechanical properties and microstructure as response variables. The methodology involves conducting experiments, applying Taguchi analysis and ANOVA to optimize parameters for properties like tensile strength and hardness. The research aims to minimize defects and improve joint quality of AA6105. Equipment for FSW and response testing is also detailed.
IRJET- Analysis and Comparison of Friction Stir Welding on Various Aluminum A...IRJET Journal
This document analyzes and compares friction stir welding on various aluminum alloys. It discusses welding aluminum alloys 5083 and 7075 together using friction stir welding at different tool rotation and travel speeds. Microstructure analysis showed typical friction stir welding zones and appropriate grain sizes. A thermo-mechanical model was developed to study temperature fields under different rotation speeds. The welds obtained from both aluminum alloys were compared under different welding conditions to evaluate weldability. Defect-free welds were achieved at a tool rotation speed of 1400 rpm and travel speed of 80 mm/min.
IRJET- Friction Stir Welding of AA5052& AA6061 Aluminium Alloy by using T...IRJET Journal
This document discusses friction stir welding of dissimilar aluminum alloys AA5052 and AA6061 using Taguchi methods to optimize welding parameters. AA5052 and AA6061 plates were welded using various tool rotational speeds, transverse feeds, and tilt angles. Tensile testing showed the highest strength of 211MPa occurred with a rotational speed of 700rpm, transverse feed of 110mm/min, and tilt angle of 2 degrees. Taguchi analysis identified tilt angle as the most important parameter, with increased tilt angle improving tensile strength and elongation. Overall, friction stir welding was able to successfully join the dissimilar aluminum alloys.
A Review on Optimization of the Process Parameters in Friction Stir Welding o...IJAEMSJORNAL
This study is describing a simple and systematic methodology for optimizing the Process parameters of friction stir welding (FSW) of (AA6105 and AA6082) aluminium alloy using Taguchi technique. The main focus of this review paper is to discuss FSW principle, process parameter and mechanical properties. The current study focuses on the friction stir welding of wrought aluminium alloys 6082 and aluminium alloy 6105 that are commonly used in the structural and automotive industries. Apart from this paper FSW process has been done on various aluminium alloys but dissimilar friction stir welding of these two materials are not reported in their research. A systematic study has been performed on the joint properties on the dissimilar welding of the selected materials and their relationships between various parameters.
This document summarizes a study that investigated the effects of different quenching media (brine solution, water, diesel oil, and air) on the impact strength of single-vee butt welded mild steel joints. Samples of mild steel were welded using a coated electrode and then heat treated at temperatures from 2000°C to 6000°C before being quenched in the different media. Impact testing found that quenching in brine solution resulted in the lowest average impact strength, while quenching in air produced the highest average impact strength. Overall, the results indicated that air was the best quenching medium for welded mild steel, followed by diesel oil, water, and brine solution, when considering impact
Effect of Tool Rotation Speed on the Hardness of Welded Joints of Aluminium A...ijsrd.com
Aluminum alloys are used in engineering design for their light weight, high strength-to weight ratio, corrosion resistance, and relatively low cost. Aluminum is available in various compositions, including “pure†metal, alloys for casting, and alloys for the manufacture of wrought products wrought Alloys. Most aluminum alloys used for wrought products contain Less than 7 percent of alloying elements. By the regulation of the amount and type of elements added, the properties of the aluminum can be enhanced and its working characteristics improved. In this welding process we have study that two pieces of aluminum alloy (6063) were welded with the help of friction stir welding process and here in this welding process we have found that the microstructure of weld zone was characterized by dynamic recrastallization producing fine grain structure. The vickers hardness testing results obtained for welded specimens and we have observed that the hardness is increases and decreases on different parameters like tool rotation speed. But we have obtained that as the tool rotating speed is increases the hardness will aslo increases. Finally we obtained the max. hardness(Hv-40) on max. Tool rotation speed of (rpm-1800).
Research Inventy : International Journal of Engineering and Scienceinventy
esearch Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
A STUDY OF EFFECT PROCESS PARAMETERS ON TENSILE STRENGTH IAEME Publication
This document discusses a study on the effect of process parameters on tensile strength of friction stir welded AA6061 aluminum alloy joints. Friction stir welding is a solid-state joining process that uses a non-consumable rotating tool to join materials together without melting. The study examines parameters like rotational speed, traverse speed, axial force, shoulder diameter, and tilt angle. Tensile test samples were prepared and tensile strength values were measured for different parameter combinations based on a Taguchi design of experiments. Optimum tensile strength was found at 1000 rpm speed, 14 mm/min feed rate, 7 kN axial force, 17 mm shoulder diameter, and 3° tilt angle for cylindrical tools and 710 rpm speed,
A STUDY OF EFFECT PROCESS PARAMETERS ON TENSILE STRENGTHIAEME Publication
Friction stir welding (FSW) is a comparatively innovative solids-state joining
process. This joining mechanism is very energy efficient, environment friendly and
multitalented. The aim of this paper is improvement an affiliation between in the welding
parameters and mechanical properties of the AA6061T-6 type of aluminum alloy using
the friction stir welding mechanism .The effects of the various processing parameters
they are, tool rotational speed, traverse speed, axial force and geometry play tool they
are play an important role on the quality of welded joining. The FSW joints mechanism
have advanced tensile strength to the heaviness ratio. The present work of this paper is
done to think about the impact of the contribution parameters on the tensile strength.
The tensile welding parameters mainly influenced by the following variables they are
weld speed, feed, and tilt angle. The parameters are take these of the examiner attributes
they are the attributes are rotational speed, weld speed, axial force, shoulder diameter
and tilt angle. From this examination it is found that the square tool pin profile
producers are mechanically sound defect free welds compare to the tool to pin effects
Effect of Process Parameters and Nano particles on Friction Stir Welding of D...IRJET Journal
This document summarizes research on friction stir welding (FSW) of dissimilar aluminum alloys. It discusses how FSW is used to join materials like aluminum and challenges in joining dissimilar materials, such as formation of brittle intermetallic compounds with different properties. The document reviews studies on FSW of aluminum alloys with additions of nanoparticles like silicon carbide to improve mechanical properties. It also examines work on using probeless tools to repair defects in friction stir welds of aluminum and copper.
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Investigation and analysis of metallurgical and mechanical properties of aa1100 using fsw
1. Journal of Environment and Earth Science www.iiste.org
ISSN 2224-3216 (Paper) ISSN 2225-0948 (Online)
Vol.4, No.15, 2014
Investigation and Analysis of Metallurgical and Mechanical
Properties of AA1100 using FSW
P.Vijayasarathi1 D.Christopher Selvam2
1.Mechanical Department, Anna university Research scholar, Chennai, India
2.Asst. Prof., Mechanical Department, Jeppiaar Institute of Technology, Kunnam, Chennai, India
Abstract
The effect of processing parameters on the mechanical and metallurgical properties of two similar joints of
AA1100 produced by friction stir welding was analysed in this investigated. Different FSW samples were
produced by varying the rotating spindle speed of the tool as 800 and 1400rpm and by varying the alloy
positioned on the advancing side of the tool. In all the experiments the horizontal feed rate is fixed at 75m/min.
All the welds were produced perpendicularly to the rolling direction for both the alloys. Micro hardness (HV)
and tensile tests performed at room temperature were used to evaluate the mechanical properties of the joints. In
order to analyse the micro structural evolution of the material, the weld’s cross-sections were observed optically
and SEM observations were made of the fracture surfaces.
Keywords:FSW; Aluminium alloys AA110; Mechanical and metallurgical characterization.
1.INTRODUCTION
Modern aerospace concepts demand reductions in both the weight as well as cost of production of materials.
Under such conditions, welding processes have proven most attractive, and programs have been set up to study
their potential. Car manufacturers and shipyards are also evaluating new production methods. Increasing
operating expenses are driving manufacturers to reduce weight in many manufacturing applications, particularly
in aerospace sector. The goal is to reduce the costs associated with manufacturing techniques to result in
considerable cost and weight savings by reducing riveted/fastened joints and part count. One way of achieving
this goal is by utilising a novel welding technology known as Friction Stir Welding (FSW). Friction stir welding
is a solid-state joining process developed and patented by the Welding Institute (TWI) in 1991 by Thomas et al
and it is emerged as a welding technique to be used in high strength alloys (2xxx, 6xxx, 7xxx and 8xxx series)
for aerospace, automotive and marine applications that were difficult to join with conventional techniques[1,2].
This technique is attractive for joining high strength aluminium alloys since there is far lower heat input during
the process compared with conventional welding methods such as Tungsten Inert Gas (TIG) or Metal Inert Gas
(MIG). This solid state process leads to low distortion in long welds, excellent mechanical properties in the weld
and heat-affected zone, no fumes or spatters, low shrinkage, as well as being energy efficient. Furthermore, other
cost reductions are realized in that the process uses a non-consumable welding tool. The process was developed
initially for aluminium alloys, but since then FSW was found suitable for joining a large number of materials.
In FSW a non-consumable rotating tool with a specially designed pin and shoulder is inserted into the
abutting edges of sheets or plates to be joined and traversed along the line of joint. The tool serves two primary
functions: (a) heating of work piece, and (b) movement of material to produce the joint. The heating is
accomplished by friction between the tool and the work piece and plastic deformation of work piece. The
localized heating softens the material around the pin and combination of tool rotation and translation leads to
movement of material from the front of the pin to the back of the pin. As a result of this process a joint is
produced in ‘solid state’. During FSW process, the material undergoes intense plastic deformation at elevated
temperature, resulting in generation of fine and equiaxed recrystallized grains. The fine microstructure in friction
stir welds produces good mechanical properties. Fig. 1 shows a schematic diagram of the FSW process.
90
2. Journal of Environment and Earth Science www.iiste.org
ISSN 2224-3216 (Paper) ISSN 2225-0948 (Online)
Vol.4, No.15, 2014
Figure 1: Schematic diagram of the FSW process.
Many papers are present in the literature regarding this field. Further to joints of similar alloys, FSW is
being studied for welding dissimilar alloys which can be of particular interest in some industrial applications.
Some works can be found in the literature [3–7], but data is still scarce on the characterisation of 1100 joint type.
Some authors have demonstrated that the microstructure of the weld nugget of strongly different aluminium
alloys is mainly fixed at the retreating side of the material [3]. Murr et al. [8] showed the properties of dissimilar
casting alloys by FSW. The micro structural evolution of dissimilar welds as a function of processing parameters
has been widely studied in [9], showing the behaviour of AA6061–AA2024 materials. Dickerson et al. [10]
found that friction-stir-welded butt joints are generally defect free if welding process conditions (welding speed
and sheet thickness) are properly tuned within a ‘tolerance box’ for a particular alloy. It is not possible to assume
that FSW will be free of flaws, however, because manufacturers may want to run FSW outside the tolerance box
in order to increase productivity. The weld zones are more susceptible to corrosion than the parent metal [11-16].
Generally, it has been found that Friction stir (FS) welds of aluminium alloys such as 2219, 2195, 2024, 7075
and 6013 did not exhibit enhanced corrosion of the weld zones. FSW of aluminium alloys exhibit inter granular
corrosion mainly located along the nugget’s heat-affected zone (HAZ) and enhanced by the coarsening of the
grain boundary precipitates. Coarse precipitates and wide precipitate-free zones promoted by the thermal
excursion during the welding are correlated with the intergranular corrosion. The effect of FSW parameters on
corrosion behaviour of friction stir welded joints was reported by many workers [14, 16]. The effect of
processing parameters such as rotation speed and traverse speed on corrosion behaviour of friction stir processed
high strength precipitation harden able AA2219-T87 alloy was investigated by Surekha et al. [16]. However,
researchers have nevertheless been strained to study competent study of the mechanical properties in terms of
UTS, YS and % elongation, micro hardness test, fractography analysis, and metallurgical properties, and the
main causes of developing defects with changing FSW parameters for a two similar aluminium joint of AA1100.
Selection of process parameters is an important issue in the FSW process. Present paper, the effect of different
welding speeds on the weld characteristics of advancing and retreating side of AA110 and retreating side of
AA1100 fabricated by a cylindrical- shouldered tool pin profile is investigated.
2. EXPERIMENTAL PROCEDURE
The experiments were conducted on the aluminium alloy AA110, its chemical composition and mechanical
properties are respectively presented in Tabs. 1.The rolled plates of 6.35mm thickness were cut into the required
size (100mm×100 mm) by power hacksaw cutting and grinding. Square butt joint configuration was prepared to
fabricate FSW joints. The initial joint configuration was obtained by securing the plates in position using
mechanical clamps. The direction of welding was normal to the rolling direction. Single pass welding procedure
was used to fabricate the joints. In present work cylindrical- shouldered tool pin profile was used for the welds,
made of high carbon high chromium steel. The tool dimensions are shown in Fig. 2. The machine used for the
production of the joints was vertical machining centre. Different materials positioned on the advancing side of
the tool allowed four different welding conditions described in Tab.2.
91
3. Journal of Environment and Earth Science www.iiste.org
ISSN 2224-3216 (Paper) ISSN 2225-0948 (Online)
Vol.4, No.15, 2014
92
General Properties of AA1100
ALLOY
ULTIMATE
TENSILE
STRENGTH
(PSI)
THERMAL
EXPANSION
COEFFICIENT
DENSITY
KG/M3
ELASTIC
MODULUS MELTING
POINT
AA100 13,000 20.4-25.0×10-6/K 2600-2800
70-79 GPa 660 °C
Chemical Compositions of AA1100
ELEMENTS Si & Fe Cu Mn Mg Cr Zn Ti others Al
REQUIRED
Min Max Min Max Min Max - - Min Max Max Each Total
Si + Fe 0.95 0.05 0.20 - 0.050 - - - 0.10 - 0-0.05 0-0.15 Balance
CONTENTS 0.20 0.050 - - 0.10 - Balance
Mechanical Properties of AA1100
Tensile Strength (M Pa) Yield Strength (M Pa) Elongation % Hardness (HV)
Min Max Min Max Min Max
230 570 215 505 8 25 90
Table 1: Chemical composition and mechanical properties AA1100.
OVER ALL PROCESS PARAMETERS
Materials of Joints
Rotational Speed
(rpm)
Vertical Force
(Kg)
Vertical Feed
Rate
(m/s)
Horizontal
Feed Rate
(mm/min)
AA1100 –AA1100
800 6000 0.6 75
1000 7000 1.2 75
1200 8000 1.5 75
1400 8000 1.8 75
Table 2: Welding conditions employed to join the AA1100 plates.
Figure 2: Geometry of the cylindrical-shouldered tool pin profile used in the present study.
The design of the tool is a critical factor as a good tool can improve both the quality of the weld and
the maximum possible welding speed. The D3-type steel has High carbon High chromium steel tool is selected
for welding[8]. The chemical composition of the tool material described in Tab.3.
4. Journal of Environment and Earth Science www.iiste.org
ISSN 2224-3216 (Paper) ISSN 2225-0948 (Online)
Vol.4, No.15, 2014
All welded samples were visually inspected in order to verify the presence of possible macroscopic
external defects, such as surface irregularities, excessive flash, and surface-open tunnels. By using Radiographic
unit, X-Ray radiographic inspection was carried out on FSW samples. The test is carried out in Metallurgical
microscope- METOSCOPE-1 equipment.
Mechanical properties of the test welds were assessed by means of tensile tests and the ultimate tensile
stress (UTS) yield strength (YS) and % elongation were measured in the tensile test. Micro indentation hardness
test as per ASTM E-384:2006 has been used to measure the Vickers hardness of FSW joints. The Vickers micro
hardness indenter is made of diamond in the form of a square-base pyramid. The test load applied was 1Kg and
the dwell time was 15 seconds. The indentations were made at midsection of the thickness of the plates across
the joint. The tensile fractured surfaces were analyzed by using scanning electron microscopy (SEM).
Metallographic specimens were cut mechanically from the welds, embedded in resin and mechanically
ground and polished using abrasive disks and cloths with water suspension of diamond particles. The chemical
etchant was the Keller’s reagent. The microstructures were observed on optical microscope.
Thermal and Physical Properties of the Tool material
93
TOOL
THERMAL
EXPANSION
COEFFICIENT
DENSITY
KG/M3
ELASTIC
MODULUS MELTING POINT
D3 STEEL 12×10-6/°C 7.7x1000
190-210 GPa 1421°C
Chemical Compositions of AA1100
ELEMENTS C Mn Si Cr Ni W V P S Cu
CONTENTS
2.00-
2.35
0.60 0.60
11.00-
13.50
0.30 1.00 1.00 0.03 0.03 0.25
Table 3: Thermal Properties, Physical Properties and Chemical composition of D3 steel tool.
3. RESULT AND DISCUSSION
The mechanical and metallurgical behaviour of two similar FSW AA110 was studied in this research. Transverse
tensile properties of FSW joints such as yield strength, tensile strength, and percentage of elongation on
transverse tensile specimens are presented in Tab. 4.
Spindle Speed in
Material of FSW Joint
RPM
YS
(N/mm2)
UTS
(N/mm2)
% Elongation
AA1100
(TEST PIECE –I)
800 105.44
110.57 8.00
AA1100
(TEST PIECE –II)
1000 104.89
113.71 16.40
AA1100
(TEST PIECE –III)
1200 87.94
93.37 12.40
AA1100
(TEST PIECE –IV)
1400 91.82
98.62 9.20
Table 4: Mechanical properties of two similar FSW joints.
AA1100 (TEST PIECE –I) is welded by 800 rpm tool rotation with vertical force of 6000Kg and the entire tool
tip is inserted in to the work piece with vertical feed rate 0.6m/s. At this condition the tool moves entire length of
the work piece with horizontal feed rate of 75m/min on the weld path between the weld plates. The onion ring
portion of the weld joints looks very rough with excess of materials at the edges of the weld part.
AA1100 (TEST PIECE –II) is welded by 1000 rpm tool rotation with vertical force of 7000Kg and the entire
tool tip is inserted in to the work piece with vertical feed rate 1.2m/s. At this condition the tool moves entire
length of the work piece with horizontal feed rate of 75m/min on the weld path between the weld plates. The
onion ring portion of the weld joints looks little bit improvement on smoothness with less amount of material at
the edge of the weld part.
AA1100 (TEST PIECE –III) is welded by 1200 rpm tool rotation with vertical force of 8000Kg and the entire
tool tip is inserted in to the work piece with vertical feed rate 1.5 m/s. At this condition the tool moves entire
length of the work piece with horizontal feed rate of 75m/min on the weld path between the weld plates. The
onion ring portion of the weld joints looks smooth surface with less amount of material at the edges of the weld
part.
5. Journal of Environment and Earth Science www.iiste.org
ISSN 2224-3216 (Paper) ISSN 2225-0948 (Online)
Vol.4, No.15, 2014
AA1100 (TEST PIECE –IV) is welded by 1400 rpm tool rotation with vertical force of 8000Kg and the entire
tool tip is inserted in to the work piece with vertical feed rate 1.8 m/s. At this condition the tool moves entire
length of the work piece with horizontal feed rate of 75m/min on the weld path between the weld plates. The
onion ring portion of the weld joints looks very fine smooth surface with less amount of material at the edges of
the weld part. Fig.3. shows the Effect of welding speed on mechanical properties for two similar alloys AA1100
Figure 3 : Effect of welding speed on mechanical properties for two similar alloys AA1100-AA1100.
3.1. Microstructure and Hardness Test:
This test is carried out in Metallurgical microscope- METOSCOPE-1 equipment. The microstructure at the FSW
joints shows fine Al-Fe-Si and MgSi particles and at the base shows elongated Al-Fe-Si and MgSi particles in a
matrix of aluminum solid solution. The fig. 4.shows the microstructure of the FSW joints. The hardness test is
carried out in Vickers hardness test machine at FSW joints in weld region. Heat affected zone (HAZ) and base
metal with 1Kg load. The various values are obtained from the FSW joints. Fig.5. shows the Effect of welding
speed on micro hardness for similar alloys AA1100
Figure 4: SEM images of FSW joints of AA1100
94
Spindle Speed in RPM
Horizontal Feed Rate
(mm/min)
YS (N/mm2)
UTS (N/mm2)
% ε
6. Journal of Environment and Earth Science www.iiste.org
ISSN 2224-3216 (Paper) ISSN 2225-0948 (Online)
Vol.4, No.15, 2014
Figure 5 :Effect of welding speed on micro hardness for similar alloys AA1100
3.2. Macro Examination Test
This test is carried out in Stereomicroscope in 10X zoom level observation, in this test the samples was macro
etched and examined visually reveals complete fusion between weld and base metal. So, its concluded there is no
presence of any weld defects like lack of fusion, lack of penetration or excess penetration, porosity, inclusions,
cracking, undercut, lamellar tearing, etc. The macro structure is shown in following fig.6.
Figure 6:Macro structure of FSW joints
4. CONCLUSION
The mechanical and metallurgical behaviour of two similar FSW AA1100 was studied in this paper. The joints
were produced with same alloy positioned on the advancing side of the tool. The joints were realized by
changing with a rotation speed from 800 to 1600 rpm and the horizontal feed rate is fixed at 75 mm/min. The
downward force was observed to be constant as the horizontal feed rate for all the produced joints increases. The
tensile strength of the similar joint is lower than that of the parent metal. The similar joints exhibited good
mechanical properties and Micro structural changes induced by the friction stir welding process were clearly
identified in this study. A softened region has clearly occurred in the friction stir welded joints, due to
dissolution of strengthening precipitates.
REFERENCES
[1] W. M. Thomas, E. D. Nicholas, Materials & Design, 18 (1997) 269.
[2] W. M. Thomas, E. D. Nicholas, J. C. Needham, M. G. Nurch, P. Temple-Smith, C. Dawes, Patents on
Friction Stir Butt Welding, International: PCT/GB92/02203; British: 9125978.8; USA: 5460317, (1991-1995).
[3] W. B. Lee, Y. M. Yeon, S. B. Jung, J. Mater. Sci., 38 (2003) 4183.
[4] W. B. Lee, Y. M. Yeon, S. B. Jung, Scripta Materialia, 49 (2003) 423.
[5] P. Cavaliere, R. Nobile, F.W. Panella, A. Squillace, Int. J. Machine Tools Manufacturing, 46 (2006) 588.
[6] P. Cavaliere, A. De Santis, F. Panella, A. Squillace, Material & Design, 30 (2008) 609.
[7] A. Scialpi, M. de Giorgi, L. A. C. de Filippis, R. Nobile, F.W. Panella, Material & Design, 29 (2008) 928.
[8] L. E. Murr, N. A. Rodriguez, E. Almanza, C. J. Alvarez, J. of Material Science, 40 (2005) 4307.
[9] J. H. Ouyang, R. Kovacevic, J. Material Engineering, 11 (2002) 51.
[10] T. L. Dickerson, J. Przydatek, Int. J. Fatigue, 25 (2003) 1399.
[11] C.S. Paglia, K.V. Jata, R.G. Buchheit, Material Science Engineering A, 424 (2006) 196.
[12] R.W. Fonda, P.S. Pao, H.N. Jones, C.R. Feng, B.J. Connolly, A.J. Davenport, Material Science Engineering
A, 519 (2009) 1.
[13] D.A. Wadeson, X. Zhou, G.E. Thompson, P. Skeldon, L. Djapic Oosterkamp, G. Scamans, Corrosion
Science, 48(2006) 887.
[14] M. Jariyaboon, A.J. Davenport, R. Ambat, B.J. Connolly, S.W. Williams, D.A. Price, Corrosion Science, 49
(2007) 877.
[15] P. S. Pao, S. J. Gill, C. R. Feng, K. K. Sankaran, Scripta Materiala, 45 (2001) 605.
[16] K. Surekha, B. S. Murty, K. Prasad Rao, Solid State Sciences, 11 (2009) 907.
95
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TEST PIECE -2
TEST PIECE -3
TEST PIECE -4
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