Effect of Conical Tapered tool pin profile on Microstructure and Mechanical Properties of Friction Stir welded Dissimilar Metals
Keywords:
Aluminium alloy, Dissimilar Materials, Microstructure, Micro hardness and Mechanical Properties, FSWAbstract
Recently many reports on Friction Stir Welding (FSW) of various dissimilar systems such as Aluminium alloys
AA6061-T6 and AA7075, 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 so-called welding-head 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 alloys AA 6061-T6 and
AA7075,plates in 6mm thickness.