Effect of Mechanical and Tribological properties on Aluminium-Graphene reinforced composites

Authors: Vinod Kumar  R, Reddappa H.N, Chandrashekar A

Abstract

In recent years, the utilization of Metal Matrix Composites has increased in various areas of science and technology, due to their special physical, mechanical, and wear properties. Of all the Metal Matrix Composites, aluminium-based composites particularly are finding a lot of scope, due to their excellent high strength to weight ratio, high stiffness, higher thermal conductivity as well as corrosion, and wear resistance properties. Therefore, aluminium based composites have the potential to replace the conventional materials in the field of automobile, aerospace, construction, house-hold appliances, and food packaging industries. In the past decades, various materials have been used as reinforcements to fabricate aluminium composites, such as alumina oxide, silicon carbide, titanium carbide, Graphene, Red mud, tungsten carbide, and titanium di boride, etc.,.

The main objective of this study is to develop Graphene reinforced aluminium composites using Stir casting, Squeeze casting and the Powder metallurgy process.

The aluminium of 2024 selected as a metal matrix composite with graphene as reinforced material. 0.25%, 0.5%, 0.75%, 1% of graphene will be added to the metal to form composite was synthesized to investigate the effects of graphene dispersion by Stir casting / Squeeze casting technique.

This AMMC’s can be fabricated in Stir casting/Squeeze casting set up with little effort and at low cost. The prepared composites are characterized by the mechanical properties, structural properties and tribological properties on graphene.

Keywords: Aluminium alloy, Nano Graphene, Ultimate Tensile Strength, Yield Strength, Hardness, Stir casting, wear rate.