Multi-Objective Optimization of Mechanical Attributes in Friction Stir Welding on Al 7075-T65 Using Anova

Industry interest in friction stir welding is growing in the automotive and aerospace sectors. It is a substitute for rivets and electric resistance welding, and it has several benefits in terms of energy use, environmental preservation, and the welding joint's mechanical properties. The current endeavors aim to enhance comprehension of the process, investigate diverse tool configurations, optimize the process parameters, and expand the scope of FSW's applicability. In this paper, similar metals of Al 7075-T651 were joined through the HSS tool in the FSW procedure. Three stages of selection were used for the process parameters, which included axial load, tool traverse speed, and rotation speed. Taguchi L27 full factorial design was selected for experiments. The process parameters were optimized by considering the reaction characteristics, similar to the maximal hardness and tensile strength. The UTS and hardness tests were conducted based on ASTM guidelines. In this Gry Relational Analysis technique was used to assign the ranks for each experiment for Anova of S/N ratio. The findings indicate that the best settings were achieved with an axial load of 7 kg, a tool's transverse velocity of 40 mm/min, and a rotating speed of 1200 rpm.