1) The document reviews aluminum metal matrix composites (AMMC), which combine an aluminum matrix with reinforcements like silicon carbide, graphite, and fly ash.
2) AMMCs offer benefits like high strength, low density, good wear resistance, and are used in automotive, aerospace, and other industrial applications.
3) Stir casting is commonly used to manufacture AMMCs and results in improved properties when the reinforcements are uniformly dispersed in the aluminum matrix.
Aluminium Matrix Composites (AMC’s) are widely used in aerospace, automotive,
structural and marine applications due to their high strength to weight ratio, corrosion
resistance. In AMC one of constituent is aluminium or its alloy which forms a network
called as matrix phase and other constituent is embedded in matrix made of harder material
generally ceramic or non metallic material called as reinforcement. Various processing
techniques are available for manufacturing of AMC’s. Stir casting is one of the economical
and extensively used methods to enhance attractive properties of AMC’s. This paper
presents an overview of stir casing process, process parameter and preparation of AMC
using aluminium alloy as matrix phase and alumina (Al2O3) as reinforcement by varying
their proportion.
Experimental Study of Wear Rate Coefficient of Aluminium Hybrid Composites Ma...AM Publications
In current decade, demand in material characteristics like light weight, superior strength to weight ratio, improved surface properties and enhanced wear resistance for complex engineering applications like automobile, aerospace and nuclear are researcher’s interest. However, performance of hybrid composites depends on right combination of reinforcements. Silicon carbide, silicon nitride, boron nitride and titanium carbide are few reinforcements available at present. In this work, Al356 is reinforced with SiC and B4C to enhance the mechanical properties, surface hardness and wear resistance. This hybrid composite is prepared by stir casting technique and the morphology of composite is studied using optical microscope to investigate the dispersion of reinforcements. In the present study, the wear and friction characteristics of hybrid composites are investigated using pin on disc dry wear tests by varying the load and speed and the results are tabulated for load vs mass loss, load vs wear rate and load vs wear coefficient. The results report that wear rate of hybrid composites are lower than that of binary composites. Mechanical properties, surface hardness and wear characteristics of aluminium hybrid composites are compared with that of aluminium binary composites available at present.
Aluminium Matrix Composites (AMC’s) are widely used in aerospace, automotive,
structural and marine applications due to their high strength to weight ratio, corrosion
resistance. In AMC one of constituent is aluminium or its alloy which forms a network
called as matrix phase and other constituent is embedded in matrix made of harder material
generally ceramic or non metallic material called as reinforcement. Various processing
techniques are available for manufacturing of AMC’s. Stir casting is one of the economical
and extensively used methods to enhance attractive properties of AMC’s. This paper
presents an overview of stir casing process, process parameter and preparation of AMC
using aluminium alloy as matrix phase and alumina (Al2O3) as reinforcement by varying
their proportion.
Experimental Study of Wear Rate Coefficient of Aluminium Hybrid Composites Ma...AM Publications
In current decade, demand in material characteristics like light weight, superior strength to weight ratio, improved surface properties and enhanced wear resistance for complex engineering applications like automobile, aerospace and nuclear are researcher’s interest. However, performance of hybrid composites depends on right combination of reinforcements. Silicon carbide, silicon nitride, boron nitride and titanium carbide are few reinforcements available at present. In this work, Al356 is reinforced with SiC and B4C to enhance the mechanical properties, surface hardness and wear resistance. This hybrid composite is prepared by stir casting technique and the morphology of composite is studied using optical microscope to investigate the dispersion of reinforcements. In the present study, the wear and friction characteristics of hybrid composites are investigated using pin on disc dry wear tests by varying the load and speed and the results are tabulated for load vs mass loss, load vs wear rate and load vs wear coefficient. The results report that wear rate of hybrid composites are lower than that of binary composites. Mechanical properties, surface hardness and wear characteristics of aluminium hybrid composites are compared with that of aluminium binary composites available at present.
Synthesis And Characterization of Aluminum –Silicon-Fly Ash Composite By Stir...IRJESJOURNAL
Abstract :- In this work aluminium 7075 as matrix and silicon carbide and fly ash as reinforcements has been used. The %wt of reinforcement are varied to study the difference in aluminium property. Following are the samples are aluminium 7075 as 100%, aluminium 7075 90% + 10% SiC, and aluminium 7075 90% + 10% fly ash. The materials are obtained by stir casting technique. During casting 300 grams of aluminium has been taken as sample 1. 270grams of aluminium has been taken with 30grams of SiC as sample 2. The third sample is the mixture of 270grams of aluminium with 30grams of fly ash. Then the materials are made in the form of cylindrical rod of 30mm diameter and max length of 70mm. The composites are analysed for the mechanical study and the results are obtained based on hardness and the work has been extended to study the micro structure of the specimen by SEM analysis and Chemical Conformation.
Fabrication and evaluation of mechanical properties of al6061 IJARIIT
Metal matrix composite are widely used in automotive industries because they exhibits different mechanical properties
such as high strength and good wear resistance, high specific stiffness, low weight and high hardness etc. Due to these properties
metal matrix composite with particulate reinforcement and fabricating method has become one of the most important areas of
research. The work is mainly focus on fabrication of Al 6061 reinforced with 4% B4C (particle size 100 mesh) & 4% Cu and
method used for fabrication is stir casting method. Tensile strength, hardness, impact strength, microstructure of fabricated
composite are used to characterize it. By addition of B4C & Cu tensile strength and hardness of the fabricated composite has
increased and slightly decreased in impact strength. Scanning Electron microscopy is used to confirm the microstructure and
uniform distribution of B4C & Cu particles in metal matrix composite. The value of tensile strength increase up to 20% and
hardness increase upto15% due to addition of B4C & Cu paritcles.The physical and mechanical properties of composite are
improved so it can be used for automotive industrial applications.
Corrosion Characterization of Aluminium 356 Hybrid Composites in Neutral Chlo...ijtsrd
Hybrid composites are the composites which contain two different reinforcements in them. One of the reinforcements will be added in different quantities and another one will be added with same quantity. In this work hybrid composites of aluminium 356 are manufactured by adding fly ash and silicon carbide particulates. Composites are manufactured by liquid melt metallurgy technique using vortex method. Composites containing 2% fly ash and 2, 4 and 6 weight percentages of SiC particulates were manufactured. Matrix alloy was also casted in the same way for comparison. Static weight loss corrosion test and potentiodynamic polarization tests were conducted in different concentrated solutions of neutral chloride like sodium chloride. In both the tests the hybrid composites exhibited decreased corrosion rate with increase in reinforcement content. Hence hybrid composites are more suitable than the matrix alloy for applications. V. Bheema Raju | S. Kusuma | P. V. Krupakara | H. C. Ananda Murthy"Corrosion Characterization of Aluminium 356 Hybrid Composites in Neutral Chloride Medium" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-1 , December 2017, URL: http://www.ijtsrd.com/papers/ijtsrd8253.pdf http://www.ijtsrd.com/chemistry/physical-chemistry/8253/corrosion-characterization-of-aluminium-356-hybrid-composites-in-neutral-chloride-medium/v-bheema-raju
Evolution of automobile production has been driven by competitive materials. Light-weight alloys are
continuously developed as most sustainable for automotive sector. Aluminum is being used as a successful
material in automotive applications due to its low weight, higher strength, good corrosion resistance and
formability to suit different design requirements. Since aluminium has the potential to be used as replacement
of the current automotive materials like steel and cast iron, its demand has increased greatly. In a further
development aluminium metal matrix composites (MMCs) were developed and these have improved wear
resistance, high fatigue strength and better thermal stability, as compared with those of aluminum. In
automobile sector, wear is a major problem, specifically in engineering assemblies and materials used for this
purpose should have good tribological properties. To this effect Al MMCs have attracted significant attraction
since they have improved wear resistance. Metal matrix composites are usually produced with secondary
particles in the form of either continuous or discontinuous fiber or particles. From the viewpoint of good
mechanical properties aluminium matrix is generally reinforced by oxide or carbide, nitride or boride
ceramics (like Al2O3, SiC, Si3N4, TiC, TiB2. Reinforcement of the matrix with only one of these
reinforcements may not yield desired properties and the matrix may need to be augmented with other
reinforcements also. Graphite and SiC are the reinforcements used widely in automotive industries to achieve
better mechanical and tribological properties and dampen the vibrations with less operational costs.
Aluminum metal matrix composite can be produced by various methods including powder metallurgy,
conventional casting technology, etc. Among the casting methods semisolid processing of composites yields
better mechanical strength. This review deals with various manufacturing methods of metal matrix composites
processing and insight on semisolid processing and its process parameters.
Development of WC-Feal Composite by Stir Casting MethodDr. Amarjeet Singh
In this paper author make an effort to develop a new
material for fulfill the need of present requirement. This
material is developed by the using of stir casting method. A
AMMC’s composite are developed to fulfill the need of present
requirements. This composite material is prepared by the use
of 3 metals. These metals are iron (Fe), aluminum (Al) and
tungsten carbide (WC).Thus this composite come under metal
matrix composite. This composite is WC – FeAl composite.
This is prepared by the use of stir casting method. The base
metals are iron and aluminum. These are having equal
quantity by weight. In this the sample is prepared by the
change the of percentage reinforcement. This is varying from
0 to 3%. A test is conduct to check their tensile strength as
well as compressive strength. By these test it is confirm that
with the increase the percentage of reinforcement in the
composite their tensile strength is decrease but their
compressive strength is increase.
A Study on Mechanical Properties of Aluminium Alloy (LM6) Reinforced with SiC...IOSR Journals
This work deals with fabricating or producing aluminium based metal matrix composite and then
studying its microstructure and mechanical properties such as tensile strength, impact strength and wear
behavior of produced test specimen. In the present study a modest attempt has been made to develop aluminium
based MMCs with reinforcing material, with an objective to develop a conventional low cast method of
producing MMCs and to obtain homogeneous dispersion of reinforced material. To achieve this objective stir
casting technique has been adopted. Aluminium Alloy (LM6) and SiC, Fly Ash has been chosen as matrix and
reinforcing material respectively. Experiment has been conducted by varying weight fraction of Fly Ash ( 5%
and 15%) while keeping SiC constant(5%). The result shown that the increase in addition of Fly Ash increases
the Tensile Strength, Impact Strength, Wear Resistance of the specimen and decreases the percentage of
Elongation
Analysis of Mechanical and Metallurgical properties of Al-SiCp Composite by S...IJRES Journal
Composites are one of the recent trends of interest in present material innovations. Mostly metal matrix composites (MMCs) have found its applications in aerospace and automobile industries. This is because of its highly attractive properties like low density, high strength, high temperature resistance, higher strength to weight ratio. Even though it has superior properties it faces several hurdles like high cost of production, poor dispersion of reinforcement material on the matrix. A study has been made to solve this problem by forming a metal matrix composite which has Aluminium (Al-97.47% C.P) has been the matrix material and Silicon Carbide (SiC- 31.5-32μm) been a reinforcement material. A new technique, Squeeze-Cum-Stir Casting, a method used to solve the problems faced in today‘s MMC production process. The experiments have been made by varying the volume fraction of SiC (5%, 15%, and 25%), while keeping all other parameters constant. Parameters like hardness, impact strength, and ultimate tensile strength were analyzed and observed and Scanning Electron Microscopy (SEM) analysis was performed.
Synthesis And Characterization of Aluminum –Silicon-Fly Ash Composite By Stir...IRJESJOURNAL
Abstract :- In this work aluminium 7075 as matrix and silicon carbide and fly ash as reinforcements has been used. The %wt of reinforcement are varied to study the difference in aluminium property. Following are the samples are aluminium 7075 as 100%, aluminium 7075 90% + 10% SiC, and aluminium 7075 90% + 10% fly ash. The materials are obtained by stir casting technique. During casting 300 grams of aluminium has been taken as sample 1. 270grams of aluminium has been taken with 30grams of SiC as sample 2. The third sample is the mixture of 270grams of aluminium with 30grams of fly ash. Then the materials are made in the form of cylindrical rod of 30mm diameter and max length of 70mm. The composites are analysed for the mechanical study and the results are obtained based on hardness and the work has been extended to study the micro structure of the specimen by SEM analysis and Chemical Conformation.
Fabrication and evaluation of mechanical properties of al6061 IJARIIT
Metal matrix composite are widely used in automotive industries because they exhibits different mechanical properties
such as high strength and good wear resistance, high specific stiffness, low weight and high hardness etc. Due to these properties
metal matrix composite with particulate reinforcement and fabricating method has become one of the most important areas of
research. The work is mainly focus on fabrication of Al 6061 reinforced with 4% B4C (particle size 100 mesh) & 4% Cu and
method used for fabrication is stir casting method. Tensile strength, hardness, impact strength, microstructure of fabricated
composite are used to characterize it. By addition of B4C & Cu tensile strength and hardness of the fabricated composite has
increased and slightly decreased in impact strength. Scanning Electron microscopy is used to confirm the microstructure and
uniform distribution of B4C & Cu particles in metal matrix composite. The value of tensile strength increase up to 20% and
hardness increase upto15% due to addition of B4C & Cu paritcles.The physical and mechanical properties of composite are
improved so it can be used for automotive industrial applications.
Corrosion Characterization of Aluminium 356 Hybrid Composites in Neutral Chlo...ijtsrd
Hybrid composites are the composites which contain two different reinforcements in them. One of the reinforcements will be added in different quantities and another one will be added with same quantity. In this work hybrid composites of aluminium 356 are manufactured by adding fly ash and silicon carbide particulates. Composites are manufactured by liquid melt metallurgy technique using vortex method. Composites containing 2% fly ash and 2, 4 and 6 weight percentages of SiC particulates were manufactured. Matrix alloy was also casted in the same way for comparison. Static weight loss corrosion test and potentiodynamic polarization tests were conducted in different concentrated solutions of neutral chloride like sodium chloride. In both the tests the hybrid composites exhibited decreased corrosion rate with increase in reinforcement content. Hence hybrid composites are more suitable than the matrix alloy for applications. V. Bheema Raju | S. Kusuma | P. V. Krupakara | H. C. Ananda Murthy"Corrosion Characterization of Aluminium 356 Hybrid Composites in Neutral Chloride Medium" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-1 , December 2017, URL: http://www.ijtsrd.com/papers/ijtsrd8253.pdf http://www.ijtsrd.com/chemistry/physical-chemistry/8253/corrosion-characterization-of-aluminium-356-hybrid-composites-in-neutral-chloride-medium/v-bheema-raju
Evolution of automobile production has been driven by competitive materials. Light-weight alloys are
continuously developed as most sustainable for automotive sector. Aluminum is being used as a successful
material in automotive applications due to its low weight, higher strength, good corrosion resistance and
formability to suit different design requirements. Since aluminium has the potential to be used as replacement
of the current automotive materials like steel and cast iron, its demand has increased greatly. In a further
development aluminium metal matrix composites (MMCs) were developed and these have improved wear
resistance, high fatigue strength and better thermal stability, as compared with those of aluminum. In
automobile sector, wear is a major problem, specifically in engineering assemblies and materials used for this
purpose should have good tribological properties. To this effect Al MMCs have attracted significant attraction
since they have improved wear resistance. Metal matrix composites are usually produced with secondary
particles in the form of either continuous or discontinuous fiber or particles. From the viewpoint of good
mechanical properties aluminium matrix is generally reinforced by oxide or carbide, nitride or boride
ceramics (like Al2O3, SiC, Si3N4, TiC, TiB2. Reinforcement of the matrix with only one of these
reinforcements may not yield desired properties and the matrix may need to be augmented with other
reinforcements also. Graphite and SiC are the reinforcements used widely in automotive industries to achieve
better mechanical and tribological properties and dampen the vibrations with less operational costs.
Aluminum metal matrix composite can be produced by various methods including powder metallurgy,
conventional casting technology, etc. Among the casting methods semisolid processing of composites yields
better mechanical strength. This review deals with various manufacturing methods of metal matrix composites
processing and insight on semisolid processing and its process parameters.
Development of WC-Feal Composite by Stir Casting MethodDr. Amarjeet Singh
In this paper author make an effort to develop a new
material for fulfill the need of present requirement. This
material is developed by the using of stir casting method. A
AMMC’s composite are developed to fulfill the need of present
requirements. This composite material is prepared by the use
of 3 metals. These metals are iron (Fe), aluminum (Al) and
tungsten carbide (WC).Thus this composite come under metal
matrix composite. This composite is WC – FeAl composite.
This is prepared by the use of stir casting method. The base
metals are iron and aluminum. These are having equal
quantity by weight. In this the sample is prepared by the
change the of percentage reinforcement. This is varying from
0 to 3%. A test is conduct to check their tensile strength as
well as compressive strength. By these test it is confirm that
with the increase the percentage of reinforcement in the
composite their tensile strength is decrease but their
compressive strength is increase.
A Study on Mechanical Properties of Aluminium Alloy (LM6) Reinforced with SiC...IOSR Journals
This work deals with fabricating or producing aluminium based metal matrix composite and then
studying its microstructure and mechanical properties such as tensile strength, impact strength and wear
behavior of produced test specimen. In the present study a modest attempt has been made to develop aluminium
based MMCs with reinforcing material, with an objective to develop a conventional low cast method of
producing MMCs and to obtain homogeneous dispersion of reinforced material. To achieve this objective stir
casting technique has been adopted. Aluminium Alloy (LM6) and SiC, Fly Ash has been chosen as matrix and
reinforcing material respectively. Experiment has been conducted by varying weight fraction of Fly Ash ( 5%
and 15%) while keeping SiC constant(5%). The result shown that the increase in addition of Fly Ash increases
the Tensile Strength, Impact Strength, Wear Resistance of the specimen and decreases the percentage of
Elongation
Analysis of Mechanical and Metallurgical properties of Al-SiCp Composite by S...IJRES Journal
Composites are one of the recent trends of interest in present material innovations. Mostly metal matrix composites (MMCs) have found its applications in aerospace and automobile industries. This is because of its highly attractive properties like low density, high strength, high temperature resistance, higher strength to weight ratio. Even though it has superior properties it faces several hurdles like high cost of production, poor dispersion of reinforcement material on the matrix. A study has been made to solve this problem by forming a metal matrix composite which has Aluminium (Al-97.47% C.P) has been the matrix material and Silicon Carbide (SiC- 31.5-32μm) been a reinforcement material. A new technique, Squeeze-Cum-Stir Casting, a method used to solve the problems faced in today‘s MMC production process. The experiments have been made by varying the volume fraction of SiC (5%, 15%, and 25%), while keeping all other parameters constant. Parameters like hardness, impact strength, and ultimate tensile strength were analyzed and observed and Scanning Electron Microscopy (SEM) analysis was performed.
HEAT TREATMENT EFFECT ON MECHANICAL PROPERTIES AND SEM ANALYSIS OF AL6061/WC/...IAEME Publication
Recent developments in material technology help to find and fabricate new materials which may replace existing materials for various applications. Among those, composite materials play a vital role which is combination of two or more materials with different physical and chemical properties. Aluminum plays a vital role in the automotive, aerospace and marine industries this for its strength, less weight, flexibility and cost. The present study is to cast a metal matrix composite of al 6061 with the selected reinforcing materials. The reinforcing material used here are titanium (Ti), tungsten carbide (Wc), boron carbide (B4C) and chromium (Cr) in the form of particles.
Studies On Microstructure And Mechanical Properties Of Flyash Reinforced Al20...dbpublications
The aim is to study the mechanical property and Tribological behavior of Al2024/flyash composite with various weight fractions (3%, 6%, 9%) were prepared by squeeze casting method. The average particle size of flyash is 45-50 μm. In addition, Al2024 alloys were cast for comparison purposes. Microstructure, hardness and tensile properties of these composites were evaluated and compared with as-cast alloy and the composites. In addition, tribological properties of these composites were evaluated using a Pin-on-Disc apparatus with different parameters of varying loads of 10N and 50N and(with constant parameters such as time of 10 minutes, sliding velocity of 3 m/s, track diameter of 150mm).The microstructure of the composites shows homogenous distribution of flyash particles in the Al matrix composite. The wear and mechanical properties of composites improve with increasing the weight fraction of flyash. The aim of present study is to evaluate the effect of microstructure, mechanical and tribological properties of aluminium alloy Al2024/flyash metal matrix composites
Microstructure and Hardness of Aluminium Alloy- Fused Silica Particulate Comp...AM Publications
Aluminum matrix composites (AMCs) refer to the class of light weight high performance aluminum centric
material systems. The reinforcement in AMCs could be in the form of continuous/discontinuous fibers, whiskers or particulates,
in volume fractions. Properties of AMCs can be tailored to the demands of different industrial applications by suitable
combinations of matrix, reinforcement and processing route. This work focuses on the fabrication of aluminum alloy (LM13)
matrix composites reinforced with 9%, 12% &15% fused silica particulates using stir casting route. The microstructure and
hardness of the fabricated composite were analyzed and reported.
Experimental Investigation of Wear Properties of Aluminium LM25 Red Mud Metal...IJSRD
The use of different kind of Metal-matrix composite materials is in constant growing over the years, because they have better physical, mechanical and tribological properties comparing to matrix materials. In automotive industry they are used for pistons, cylinders, engine blocks, brakes and power transfer system elements. Research attempts have been made in the past toreduce the cost of processing of composites, decrease the weight of the composites, and increase the desired performance characteristics. This paper presents the findings of an experimental investigation on the effects of applied load, RPM, Sliding distance and pin temperature in dry sliding wear studies performed on red mud-based aluminum metal matrix composites (MMC). Red mud is an industrial waste during the production of aluminum from bauxite ore. A pin-on-disc apparatus was used to conduct the dry sliding wear test. Taguchi-based L9 orthogonal array has been used to accomplish the objective of the experimental study. Analysis of variance (ANOVA) is employed to find the optimal setting and the effect of each parameter on wear rate.
Similar to A Review of the Aluminium Metal Matrix Composite and its Properties (19)
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