A REVIEW PAPER ON “A Study on Mechanical & Tribological Properties of Aluminium Alloy (7075) Reinforced with Nano Silicon Carbide and Red Mud”

Mechanical Engineering

A composite material is a combination of two or more chemically distinct and insoluble phases. Either metals or ceramics or both as well can be embedded with particles or fibers, to improve their properties; these combinations are known as Metal-Matrix composites. Aluminium 7075 alloy widely employed in the aircraft and aerospace industry for the manufacturing of different parts and components, it is due to its high strength to density ratio. The present study deals with the behavior of Al 7075 alloy based composites, reinforced with Nano Sic (particle size of 50 nm) and Red mud. The Nano-particles can improve the base material in terms of wear resistance, damping properties and mechanical properties. To achieve this objective stir casting technique has been adopted and then studying its mechanical and tribological properties such as tensile strength, impact strength and wear behavior of produced test specimen. Experimental set up is developed to carry out the casting of Aluminium MMCs. Experiment has been conducted by varying weight fraction of red mud while keeping Nano Si-C constant . It has been found that the tensile strength and hardness of Al alloy 7075 composites increases with the increase in % wt. of red mud up to certain limit and by addition of more amount of reinforcement the Tensile strength decreases due to poor wettability of the reinforcement material with metal Aluminium matrix.

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