ABSTRACT
Friction Stir Welding (FSW) is used in the welding of dissimilar materials. Joining of dissimilar material is required in chemical, nuclear, power generation, transportation and electronic industry. In the present study, an attempt was made to analyse the microstructure and mechanical properties of welded aluminium alloy AA6061 and copper alloy using FSW. The FSW was carried out using varying welding speed and tool offset. A mixture of recrystallized aluminium matrix and deformed copper particles were visible in nugget zone. Microstructure variation significantly affects the tensile strength and micro hardness distribution in the cross-section of the joint. Maximum tensile strength of 186 MPa at 40 mm/min welding speed and 1mm tool offset was obtained towards Al side.
