DEVELOPMENT OF MMC’S MECHANICAL CHARACTERIZATIONS AND SEM ANALYSIS OF AL7075 REINFORCED WITH 50NM SILICON CARBIDE PARTICLES

Metal matrix composites of aluminum alloy reinforced with silicon carbide reinforcement are useful in aerospace, automobile and general engineering industries because of their favourable microstructure and mechanical behavior. In this work, Composites of aluminum alloy Al7075 and 50nm silicon carbide were fabricated by using stir casting. Further tests like, compression, tensile, hardness and SEM analysis were carried out. a significant improvement in material strength is observed in aluminum alloy Al7075 metal matrix composite as compared to the Al7075 alloy without silicon carbide addition. Cast base metal and its composites were found to fairly predominantly in brittle mode. The 50nm silicon carbide content varies 0%,2%,4%,6% &8%wt.fractions. Comparison of mechanical properties microstructure studies are presented in this paper.