Experimental investigation of friction stir welding of dissimilar aa6101 t6 and aa1350 alloys

Abstract

Aluminium alloys are widely used in aerospace transport and electrical industries because of their light weight non corrosive and conductive nature so welding of aluminium alloys is inevitable joining of aluminium alloys by conventional welding techniques produces cracks during solidification high residual stresses and low dimensional stability which results in poor quality of weld friction stir welding fsw is a most remarkable and an ecofriendly solid state welding technique which was initially invented and developed for welding of aluminium alloys in fsw the plastic deformation and stirring of material are achieved through frictional heat generation by a nonconsumable rotating tool the temperature experienced by base metals is comparatively lower than the melting temperature the thermomechanical deformation refines the grains at weld zone hence the flaws associated with fusion welding methods can be eliminated which improves the mechanical and metallurgical properties of the weld friction stir processing fsp is an advancement of fsw it is the most innovative and efficient technique to change the composition at selective locations and produce aluminium matrix composites amc in this grooves are cut on base metal and filled with ceramic particles during stirring the tool pin mixes the particles with plasticized base metal from the literature review it is understood that fsw shows better performance when compared to fusion welding methods but the fsw process for joining dissimilar aluminum alloys is not yet completely explored by researchers newline