Aluminium alloy Al7075 reinforcement and Stir casting -a Review

ABSTRACT Aluminium7075 Metal matrix composites(MMC’s) have seen significant research by reinforcing various ceramic material ,heat treatment and various manufacturing processes ,various process parameters for improving the mechanical, thermal and corrosion related properties. Aluminium 7075 MMC’s utilize ceramics likeAl2O3, TiB2, TiO2,SiC, TiC, B4C,Graphite power ,Carbon nanoparticals ,E-glass fibers,Fly ash ,Red mud with individual and multiple particulate reinforcements like Hybrid Metal matrix composites Al7075 MMC’s reinforced in various Wt % and various partical size.Al7075 metal matrix composites shows various benefits over monolithic materials including higher specific strength, high strength to weight ratio and corrosion resistance, good wear resistance, higher thermal conductivity, lower coefficient of thermal expansion.Al 7075 reinfoeced composite finding increased applications in aerospace, automobile, space, underwater, and transportation applications. This paper guides the researchers and engineers towards proper selection of materials by their properties in the relevant field and different techniques involved in manufacturing of metal matrix composites, particularly on the liquid state metal processing technique like stir castingprocess parametersand preparation of AMC using aluminium 7075 as matrix form and variousceramic materials as reinforcements by varying proportion.