A Review on the Fabrication of In Situ Metal Matrix Composite during Friction Stir Welding

Abstract

In recent years, increasing weld strength along with improved surface properties of the joint during friction stir welding (FSW) has gained noteworthy attention due to increasing applications concerning higher wear resistance and strength related factors. Accordingly, the exploration endures for new materials and ways which will probably increase weld strength along with imparting various improved surface properties to the weld. In spite of several modifications on FSW, its in-situ composite fabrication potential remains quite unfamiliar. In this study, we make available an up to date review of recent in-situ fabricated composites during FSW by using various reinforcements. In particular, the effect of various reinforcements and methodology on the weld strength and surface hardness is reported systematically. Moreover, the strengthening mechanisms accountable for the improvement in weld propeties have been reviewed, and the new potential applications of this new welding strategy are envisaged.