Manufacturing, Microstructural and Mechanical Characterization of Stir Cast Aluminium 7075/SiC Metal Matrix Composite

Abstract

Aluminium Matrix Composites (AMCs) are known as lightweight and high-strength materials with potential applications in areas such as aerospace, automobile, defence, engineering, and other industries. AMCs have the advantage of significantly reduce the overall weight of the vehicles and aircraft while maintaining their structural strength. The scope of this work is to fabricate Silicon Carbide (SiC) particle Metal Matrix Composites (MMC) by stir casting combined with mechanical stirring and to investigate the effect of SiC particles on the hardness, tensile and impact the behaviour of SiC particle reinforced 7075 aluminium alloy composites. The reinforcement of micron-sized range particles with an aluminium matrix is expected to improve the mechanical properties in composite materials. Different weight % of SiC particles are used (0, 5, 10, and 15 wt. %) for the synthesis of composites. The manufactured composites were tested to determine their mechanical properties and the results prove that the sample with 10 percentage of silicon carbide has better mechanical properties, comparably.