Effect of reinforment of particles on the mechanical properties of Al6065-SiC, Al6065- Al2O3, hybrid composites by modified stir casting method

Abstract

Aluminum and its alloys are the most essential considerations as base metal in metal matrix composites. The aluminum alloys are reasonably attracted by various researchers owing to their decrease in weight, high quality corrosion resistance, maximum thermal and electrical conductivity, and on precipitation, they exhibit higher strength and superior damping capacity. The strong requirement for weight reduction in automobile and aerospace industries insists on the optimization of the design of products to make use of less weight materials. MMCs production has numerous challenges like porosity formation, attainment of good wettability and inappropriate distribution of reinforcement. Homogenous distribution of reinforcement in the metal matrix composites is the most important challenge among the other parameters and obtained by two-step stir casting method. In this present research work Al6065 & Hybrid composites with four different reinforcement particles such as SiC, alumina, SiC-fly ash, alumina-fly ash in three different weight fractions (2, 4, and 6 %) were fabricated by modified stir casting method. The mechanical properties of the Al6065 & hybrid composites and unreinforced alloy have been investigated. The enhancement in the mechanical properties of Al6065 composites due to the reinforcement of particles is obtained.