Investigation on Mechanical and Metallurgical Characteristics of Friction Stir Welded Al-Mg-Si Alloy Reinforced with Fly Ash

Abstract

In this research paper, a successful attempt is made by using friction stir welding (FSW) joint  of aluminum alloy 6082-T6/fly ash  reinforcement. A 6 mm thick base material plate is welded by making a throughout novel cylindrical hole on the weld line. It results that tunnelling defect is formed its due to the larger size of  hole diameter of both the sides of the base material plates. Further the welds are characterized by optical microstructure (OM), scanning electron microscopy (SEM) fractography analysis, mechanical and microstructure features. Fractography analysis shows that ductile mode of failure occurs. Obtained the good ultimate tensile strength (UTS) and yield strength (YS) of 464 MPa and 380 MPa respectively