Further Improvements in Mechanical Properties and Micro Structural Studies of Al-Mg-Si Age Hardening Alloy via Friction STIR Welding

摘要

Recently many reports on Friction Stir Welding (FSW) of various similar systems such as aluminium alloy AA6061T6 has been reported. FSW of Aluminium alloys has captured important attention from manufacturing industries, such as Shipbuilding, Automotive, Railway and Aircraft production. Dissimilar welds which include welds between the different series of aluminium alloys has been successfully produced by many researchers. In FSW process, a socalled weldinghead pin rotating at speeds usually in excess of a few hundred rpm, travels down the length of contacting metal plates, creating a highly plastically deformed zone through the associated force and frictional heating. Aluminium and its alloys are widely used in industrial applications due to their excellent electrical & thermal conductivities, good strength, corrosion & fatigue resistance. The aim of present study was analogy of the microstructures and mechanical properties of friction stir welded joint of Aluminium alloy AA 6061T6 plates in 3mm thickness.