Fabrication and Mechanical Characterization of Stir Cast AA7075 (Graphene + Alumina) Nano Hybrid Composite
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Abstract
Graphene possesses remarkable mechanical properties and is also the lightest and strongest material known to man. Its unique optical and thermal properties, along with the fact that it is a carbon allotrope, make it ideal filler for the production of multipurpose composites, especially metal matrix composites. Due to lightweight, resilience to corrosion and low cost, aluminum is a widely utilized metal in many different industries. In this study, we aim to use the stir casting method to synthesize aluminum metal matrix composite strengthened with graphene nano filler and its characterization for mechanical properties. The strength of composite was assessed in terms of hardness and tensile strength. The composite displayed higher hardness and strength with rest to its counter-part as cast alloy. The improvement in hardness and strength may be attributed to the presence nano filler in the matrix and their uniform dispersion which brought various strengthening mechanism in to picture and increased mechanical properties.
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