metal matrix composites and its applications

1. Submitted to: Dr. Muhammad Waseem
mumtaz
Submitted by : shafaq saba
Roll no: 16361507-034
Course title: applied chemistry-I
Course code: CHEM-319
Semester : spring 2019
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2. Metal matrix
composite
Applications of metal matric composite
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3. Table of content:3
Topic Slide number
Metal matrix composite 04
Types on the base of reinforcement 05
Types on the base of matrix 06
properties 08
Processing methods 09
References 10

4. Table of figure:
Figure number Slide number
Figure 1 11
Figure 2 12
Figure 3 13
Figure 4 14
Figure 5 15
Figure 6 16
Figure 7
Figure 8
Figure 9
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18
19
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5. Metal
matrix
composite:
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Metal matrix composites (MMCs) are consists of a continuous
metallic matrix and one or more discontinuous reinforcement
phases .Metals that are present in matrix phase are Ti, Al, Mg,
Cu and in the reinforcement phase , the material present may
be ceramic oxides or carbides and sometimes metallic in nature
such as Mo, Pb, tungsten etc.

6. Types of
(MMCs):
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On the basis of reinforcement phase:
• particle reinforcement:
Reinforcement phase present in the form of fiber
• short fiber reinforcement:
Reinforcement phase present in the form of short fiber
• continuous fiber reinforcement:
Reinforcement phase present in the form of long fiber
• laminate reinforcement:
Reinforcement phase present in the form of laminate, laminate is the
numerous layers that are arranged in more than two dimensions

7. Types of (MMCs)
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On the basis of matrix phase:
 Aluminum matrix composite (AlMCs):
Reinforcement phase:
 Al2O3 or SiO2 particles
 Continuous fibers of Al2O3 or SiC or graphite
 Short fiber of Al2O3
 Magnesium matrix composite (MgMCs):
Reinforcement phase:
 SiC in the form of particles

8. Continue:8
Titanium matrix composite (TiMCs):
Reinforcement phase:
• SiC in the form of long fiber
• TiBr or TiS in the form of particle
Copper matrix composite (CuMCs):
Reinforcement phase:
• Long fibers of C,SiC,W or stainless steel
• SiC particles

9. Properties:
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 High strength
 Low density
 No weathering
 high modulus
 high toughness or stiffness and impact properties
 Low sensitivity to changes in temperature or thermal shock
 high surface durability and low sensitivity to surface flaws
 high electrical conductivity

10. PROCESSING OF METAL MATRIX
COMPOSITES:
Processing of metal matrix composites (MMC) divided into three main categories:
 Solid State Processing
 Liquid State Processing
 In-Situ Processing
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11. Figure no:1
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Method of fabrications:

12. Powder blending and consolidation:
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 The matrix and the reinforcement powders are blended to produce a homogeneous
distribution. The blending stage is followed by cold pressing to produce what is called a
green body, which is about 80% dense and can be easily handled. The cold pressed green
body is canned in a sealed container and degassed to remove any absorbed moisture from
the particle surfaces. The material is hot pressed, uniaxially or isostatically, to produce a fully
dense composite and extruded.
Figure no: 2
Steps in powder blending:

13. Diffusion bonding:
It is a common solid state
processing technique for joining
similar or dissimilar metals. Inter
diffusion of atoms between clean
metallic surfaces, in contact at an
elevated temperature, leads to
bonding. Used to process wide
variety of metal matrices and
control of fiber orientation and
volume fraction.
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Figure no: 3
Diffusion bonding

14. Gas pressure infiltration:
It is a forced infiltration method of liquid phase fabrication of Metal Matrix Composites, using a
pressurized gas for applying pressure on the molten metal and forcing it to penetrate into a
preformed dispersed phase. Gas Pressure Infiltration method is used for manufacturing large
composite parts
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Figure no: 4
Pressure infiltration:

15. Squeeze casting:
It is a forced infiltration method of liquid phase fabrication of Metal Matrix Composites, using
a movable mold part (ram) for applying pressure on the molten metal and forcing it to
penetrate into a preformed dispersed phase, placed into the lower fixed mold part. method is
used for manufacturing simple small parts like automotive engine pistons.
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Figure no: 5
Squeeze casting:

16. Electroplating:
It produces a coating from a 10
µm solution containing the ion of
the desired material in the
presence of an electric current.
Fibers are wound on a mandrel,
which serves as the cathode, and
placed into the plating bath with
an anode of the desired matrix
material.
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Figure no:6
Electroplating:

17. Spray
deposition:
This technique typically
consists of winding fibers onto a
foil coated drum and spraying
molten metal onto them to form a
monotape. The source of molten
metal may be powder or wire
feedstock which is melted in a
flame, arc, or plasma torch.
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Figure no: 7
Spray deposition:

18. Physical vapor
deposition:
Fibers are continuously passed
through a region of high partial
pressure of metal to be deposited.
The vapor is produced and inserted
in the process, then the
condensation occurs at this region
to produce a coating on the fiber.
The rate of deposition is about 5-10
micrometer per minute. The coated
fibers are then consolidated by hot
pressing or hot isostatic pressing .
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Figure no: 8
Physical vapor deposition

19. Semi solid powder
and processing:
In these techniques the
reinforcement phase and matrix
phase take in powder form
,heated to change solid into semi
solid form, and then by applying
pressure ,we can get the required
product.
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Figure no: 9
Semi solid processing:

20. Applications of metal matrix composite:
 Transportation (auto and rail)
 Thermal management
 Aerospace
 Industrial, recreational and infrastructure industries that uses functional
properties that involve high structural efficiency, excellent wear resistance, and
attractive thermal and electrical characteristics.
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21. references:
[1] Callister, W Jr, Rethwisch, D. 2012. Fundamentals of Materials Science and
Engineering: An Integrated Approach. 4st ed.. John Wiley & Sons, Inc. Hoboken. NJ. [2]
Campbell, F. 2006. Manufacturing Technology for Aerospace Structural Materials. 1st
ed.. Elsevier Science. Amsterdam. Netherlands.
[3] Aboudi, J., Arnold, and Bednarcyk. 2012. Micromechanics of Composite Materials: A
Generalized Multiscale Analysis Approach. 1st ed.. Butterworth-Heinemann. Oxford,
UK.
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