Mechanical characteristics of Al-Al2O3-SiC metal matrix composites made by stir casting technique

Abstract

The present investigation focuses on Al-Al2O3-SiC metal matrix composites were prepared by stir casting technique. In this, Pure aluminium (varies proportionately to the reinforcement) act as a base metal and reinforced with Al2O3 (standard wt 3%), SiC (varies Wt 3%, 5% and7%) has taken. The samples were prepared at the temperature of 750oC Aluminium (liquid state) and to warm the reinforcement materials at 300oC mixed with it by stirring of 350rpm for equally distributing the reinforcement material while it was consolidated at one place due to density differences. Hybrid composites are potential application for aircraft and space industries because of higher resistance, lower weight to strength ratio, creep resistance. To investigated the mechanical behavior of hybrid composites like hardness, Tensile strength and density.