Effect of reinforcements (B4C & Al2O3) and rotational speed on tribological properties of aluminum alloy 7075 hybrid composites through friction stir processing

Abstract

In this paper effect of Alumina (Al2O3) and Boron Carbide (B4C) particulate reinforcement and rotational speed on wear and mechanical properties of Aluminum alloy based hybrid composites fabricated through stir casting route was studied. Taguchi method was employed to optimize the rotational speed and volume percentage of reinforcement particles for improving the wear and mechanical properties of surface hybrid composites. It is found that the reinforcement particles (i.e. B4C & Al2O3) reduced in size (∼50 μm) have negative contribution while the rotational speed has positive contribution.