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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
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
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.
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
WHY WE USE MMC?
High strength
High stiffness
Toughness
Density
Good wear resistance
Damping capacity
Specific modulus
CLASSIFICATION OF MMC
Composites with metal phase
Dispersion hardened & particle
composites
Layer composites (Laminates)
Fiber
composites
Infiltration
composites
COMPOSITIONFIBER MATRIX
Graphite Aluminum
Magnesium
Lead
Copper
Boron Aluminum
Magnesium
Titanium
Alumina Aluminum
Lead
Magnesium
Silicon carbide Aluminum
Titanium
Super alloy (cobalt Base)
REIGNFORCEMENT
Embedded into matrix
Change physical properties, wear resistance, friction
co efficient, thermal conductivity
Continuous or, discontinuous
PROCESSING OF MMC
Manufacturing and Forming
Methods
Solid state methods
Semi-solid state methods
Liquid state methods Vapor Deposition
In-situ fabrication technique
Solid state methods
1. Powder blending and consolidation
Solid state methods
2. Foil diffusion bonding
Semi-solid state methods
Semi-solid powder processing
Liquid state methods
1. SQUEEZE CASTINGS
Liquid state methods
2. Electroplating and electroforming
Liquid state methods
3. Stir casting
Liquid state methods
4. Pressure infiltration
Liquid state methods
5. Spray deposition
. Vapor Deposition
In-situ fabrication technique
APPLICATIONS OF MMC
Drive shaft
Material : AlMg1SiCu+20% Al2O3P
Processing : extrusion from cast feed material
Vented passenger car brake disk
Material : G-AlSi12Mg + 20% vol. SiCp
Processing : Sand / Die casting
Longitudinal bracing beam for planes
Material : AlCu4Mg2Zr + 15 % vol. Cp
Processing : extrusion or, forging of casted feed material.
Disk brake calliper for passenger cars
Material : Aluminum alloy with nextel ceramic
fiber 610
Weight reduction : 55% cast iron compared
Partial short fibers reinforced light metal
diesel pistons
Tank armors
Material : Steel reinforced with Boron nitride
Honda has used aluminum metal matrix
composite cylinder liners in some of their
engines, including the B21A1, H22A and
H23A, F20C and F22C
Toyota has since used metal matrix
composites in the Yamaha-designed
2ZZ-GE engine
The F-16 Fighting Falcon uses monofilament
silicon carbide fibers in a titanium matrix for a
structural component of the jet's landing gear.
12Mid-fuselage structure of space shuttle
orbiter showing boron-aluminum tubes
Al high gain antenna wave guides/boom for
the Hubble Space Telescope
Demand
Low density,
Mechanical compatibility,
Chemical compatibility,
Thermal stability,
High Young’s modulus,
High compression and tensile strength,
Good process ability,
Economic efficiency.
MECHANICAL PROPERTIES OF MMC
STRENGHT OF MMC
YOUNG’S MODULUS OF MMC
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
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
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
THE END
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