Mechanical Characterization of hybrid aluminium composite-a review

Abstract

Aluminium composites are now preferred over monolithic metal due to their superior properties. In these aluminium matrix composites different types of reinforcements are added in order to improve its properties. When more than one reinforcement has been added then they are called hybrid composites. Stir casting has been mostly viewed fabrication process for the hybrid aluminium composites, along with spray deposition, powder metallurgy, liquid infiltration, mechanical alloying, squeeze casting, compo casting and spray deposition etc. Tensile strength and compressive strength has found to be increased by inclusion of ceramic reinforcement in aluminium matrix. Aluminium matrix composite reinforced with ceramic particles have higher wear resistance than the unreinforced metal or alloys. Vickers micro-hardness, Rockwell, brinell hardness of hybrid composite increased with increase in reinforcement content as compared to base metal matrix. Impact strength and elongation of aluminium composite decreases with addition of hard ceramic reinforcement