Experimental investigation on tribological and mechanical properties of aluminium alloy 6082 reinforced with titanium and graphene using nano bio lubricants

Abstract

In the recent years, a lot of research has been conducted for preparing new materials possessing high strength and better workability. Aluminium and its alloys have gained much importance in the recent times, due to its good strength to weight ratio, high thermal stability and good specific strength. Aluminium alloys are less in weight and have many economic advantages. For enhancement the mechanical and tribological aspects of aluminium, it was reinforced with strengthening materials to form composites. For enhancement of the life and workability of the composite materials during tribological interactions, lubrication has been used. To reduce the dependence on conventional petroleum-based lubricants, investigations have been carried out by using vegetable oils, which are easily bio degradable and do not harm the environment. Additives are being used in the bio lubricants for enhancing the lubricating properties of the vegetable oil during tough working conditions. In this research, an attempt has been made to conduct tribological investigations on AA6082 Aluminium Matrix Composites. AA6082 was chosen as the matrix material as it had good strength to weight ratio and excellent resistance to corrosion. It was reinforced with Titanium and Graphene, using vegetable oil incorporated with nano particles as lubricant. By using stir casting method, Aluminium Metal Matrix Composites were prepared. Six series Aluminium Alloy such as AA 6082 was used as the matrix material. For reinforcements, Graphene powder and Titanium powder were used. The purpose of using Graphene was to enhance its structural and mechanical properties. Titanium reinforcement was done to improve the hardness and wear resistant properties of the composites. The mechanical and tribological characteristics of the Aluminium Matrix Composites were evaluated by identifying the feasible limit for incorporation of the Graphene and Titanium particles. newline