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Fabrication of Graphene - Al 2124 Matrix Composite
Transcript of Fabrication of Graphene - Al 2124 Matrix Composite
Nanocomposites Processing Testing COMPOSITES NANOCOMPOSITES Nanocomposite is a multiphase solid material where one of the phases has one, two or three dimensions of less than 100 nanometers, or structures having nanoscale repeat distances between the phases. A composite is a class of materials that combines two or more constituents to get more desirable combinations of properties. Interface Reinforce-ment Matrix Metal Matrix Composites MMC is a composite with at least two constituents one being the matrix which is a metal or metal alloy, and the other is the reinforcement which is a different metal, or ceramic or organic compound. Vs Metals Vs PMC Vs CMC Higher tensile strength
Higher toughness & ductility Higher strength
Lower creep rate
Better wear resistance Higher thermal resistance
High electrical & thermal cond.
No moisture absorption ALUMINIUM MATRIX COMPOSITES Matrix Offer a large variety of mechanical properties. Adv. Al-Si, Al-Cu, 2xxx or 6xxx alloys Reinforcement Usually reinforced by Al2O3, and SiC Al 2124 Matrix Wrought Alloy Alloying elements are copper, magnesium, manganese, silicon, and zinc Elevated temperature applications requiring fracture toughness,
Aircraft structures Good strength retention and creep resistance at elevated temperatures up to 177°C
Heat treatable Graphene Reinforcement Graphene is a single layer of carbon packed in a hexagonal (honeycomb) lattice, with a carbon-carbon distance of 0.142 nm. Composites infused with graphene are stronger, stiffer, and less prone to failure than composites infused with CNTs or other nanoparticles. 1 Composites & Nano composites 2 Powder Metallurgy Ball Milling Extrusion Extrusion Parameters Extrusion
Pressure Extrusion Ratio Lubrication Extrusion Temp. 3 Testing Mechanical Physical Microstructure Objective The fabrication of a new high strength-light weight nanocomposite material combining the unique mechanical properties of – the new carbon nanomaterial – Graphene with the properties of the complex Aluminium alloy. Basic Concepts of Fabricating Metal Matrix Composites Experimental work calculations Results & Discussion Nanotech Graphene Vs
SkySpring Graphene Mixing Vs Milling Hot Compaction Vs Hot Extrusion ( Milled) Plain Al 2124 Vs 3 wt% Graphene - Al 2124 Composite Encounter Problems Fillet Breakage Extrusion Defects Processing The production of useful products from metal powder without passing through the molten state.