Abstract: Friction Stir Welding (FSW) is a novel process to facilitates various welding joints for different applications. It is an attractive technology for solid state material joining have many advanteges over conventional welding methods, like ability to produce welds with higher integrity and minimum induced distortion and residual stresses. In this paper, the operation of FSW on metal matrix Composites (MMCs), history, advantages, and limitations were discussed. Effect of different reinforcement on MMCs on the mechanical properties like tensile strength, strain hardness wear and fatigue are discussed. Further different applications of the process are presented along with critical review of literature.

Keywords: Friction Stir Welding(FSW), Aluminium Metal Matrix Composites (MMCS), Mechanical Properties.