STUDY OF FRICTION STIR WELDING AND ITS PROCESS PARAMETERS FOR JOINING OF DISSIMILAR METALS

Abstract

In early days friction stir welding was mainly used for welding of aluminium and its alloys but forlast few years great interest has been seen to join high strength metals by this process.Industries producing space satellite and airplane, nuclear reactors, heat exchanger, boiler   have shown increasing interest in the friction stir welding process to join dissimilar metals because of its clear advantages compared with fusion welding processes. This joining technique is energy efficient, environment friendly, and versatile.The proposed study and classification will try to summarize the results of devoted efforts of researchers who proposed FSW process parameters aiming to facilitate defect free welding of different metal systems according to different requirements of productive processes. Besides summarizing research results, this paper aims to provide a general understanding of FSW process and enables the selection of its parameters suitable to the modern production system. It is hoped that the study, the proposed process parameters, and the resulting analysis will be a good resource for anyone who is interested in research, and will help to stimulate further research in this area.