A brief presentation on Metal Matrix Composite(MMC) by students of Ahsanullah University of Science and Technology (AUST)

1. METAL MATRIX COMPOSITE
PRESENTED BY STUDENT ID
Md. ISHTIAK ASHRAF 13.02.08.005
DIPRAJIT BISWAS 13.02.08.006
WASIFUR RAHMAN OMI 13.02.08.048
SHAOWN RANA 13.02.08.050

2. CONTENTS
 INTRODUCTION
 CLASSIFICATION OF MMC
 COMPOSITION
 REIGNFORCEMENT
 PROCESSING OF MMC
 MANUFACTURING AND FORMING
 APPLICATION OF METAL MATIX COMPOSITES
 DEMAND
 CHARACTERISTICS
 ADVANTAGES
 DISADVANTAGES
 FUTURE APPLICATION OF MMC

3. INTRODUCTION
A metal matrix composite (MMC) is composite
material with at least two constituent parts, one being
a metal necessarily, the other material may be a
different metal or another material, such as
a ceramic or organic compound.

4. History
 Initial work in late 1960s was stimulated by the high-
performance needs of the aerospace industry
 Steel-wire reinforced copper, were among the first
continuous-fiber reinforced metal composites
 Boron filament was the first high-strength, high-
modulus reinforcement in MMC

5. WHY WE USE MMC?
 High strength
 High stiffness
 Toughness
 Density
 Good wear resistance
 Damping capacity
 Specific modulus

6. CLASSIFICATION OF MMC
Composites with metal phase
Dispersion
hardened & particle
composites
Layer
composites
(Laminates)
Fiber
composites
Infiltration
composites

7. COMPOSITION
FIBER MATRIX
Graphite Aluminum
Magnesium
Lead
Copper
Boron Aluminum
Magnesium
Titanium
Alumina Aluminum
Lead
Magnesium
Silicon carbide Aluminum
Titanium
Super alloy (cobalt Base)

8. REIGNFORCEMENT
 Embedded into matrix
 Change physical properties, wear resistance, friction
co efficient, thermal conductivity
 Continuous or, discontinuous

9. PROCESSING OF MMC

10. Manufacturing and Forming
Methods
 Solid state methods
 Semi-solid state methods
 Liquid state methods
 Vapor Deposition
 In-situ fabrication technique

11. Solid state methods
1. Powder blending and consolidation

12. Solid state methods
2. Foil diffusion bonding

13. Semi-solid state methods
 Semi-solid powder processing

14. Liquid state methods
1. SQUEEZE CASTINGS

15. Liquid state methods
2. Electroplating and electroforming

16. Liquid state methods
3. Stir casting

17. Liquid state methods
4. Pressure infiltration

18. Liquid state methods
5. Spray deposition

19. . Vapor Deposition

20. In-situ fabrication technique

21. APPLICATIONS OF MMC
 Drive shaft
Material : AlMg1SiCu+20% Al2O3P
Processing : extrusion from cast feed material

22.  Vented passenger car brake disk
Material : G-AlSi12Mg + 20% vol. SiCp
Processing : Sand / Die casting

23.  Longitudinal bracing beam for planes
Material : AlCu4Mg2Zr + 15 % vol. Cp
Processing : extrusion or, forging of casted feed
material.

24.  Disk brake calliper for passenger cars
Material : Aluminum alloy with nextel ceramic
fiber 610
Weight reduction : 55% cast iron compared

25.  Partial short fibers reinforced light metal
diesel pistons

26.  Tank armors
Material : Steel reinforced with Boron nitride

27.  Honda has used aluminum metal matrix
composite cylinder liners in some of their
engines, including the B21A1, H22A and
H23A, F20C and F22C

28.  Toyota has since used metal matrix
composites in the Yamaha-designed
2ZZ-GE engine

29.  The F-16 Fighting Falcon uses monofilament
silicon carbide fibers in a titanium matrix for a
structural component of the jet's landing gear.

30.  12Mid-fuselage structure of space shuttle
orbiter showing boron-aluminum tubes

31.  Al high gain antenna wave guides/boom for
the Hubble Space Telescope

32. Demand
 Low density,
 Mechanical compatibility,
 Chemical compatibility,
 Thermal stability,
 High Young’s modulus,
 High compression and tensile strength,
 Good process ability,
 Economic efficiency.

33. MECHANICAL PROPERTIES OF MMC

34. STRENGHT OF MMC

35. YOUNG’S MODULUS OF MMC

36. Advantages
 Low coefficient for thermal expansion
 Fire resistance, wear resistance.
 Higher transverse stiffness , strength &
modulus
 No moisture absorption
 Higher electrical and thermal conductivities
 Better radiation resistance
 Some reinforcing fibers are inexpensive
 Casting is low cost and net shaped process

37. Disadvantages
 Some fabrication processes are complex and
expensive
 Higher cost of some reinforcing fibers
 Relatively immature technology
 Machining difficult
 Complex fabrication methods
 Reinforcing material may reduce ductility and
fracture toughness
 Fiber-matrix interactions at high temperature
degrade fibers

38. FUTURE PLANS & APPLICATION
 Aerospace & Army defense
 DRTi offers excellent values of absolute
strength and stiffness as well as specific
strength and stiffness.
 Discontinuously reinforced metals
 Decreasing cost
 More mature production system

39. THE END
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