Parameter Optimization of Friction Stir Welding for AA5052 and 6061

Friction stir welding (FSW) is a solid state joining process (the metal is not melted) that uses a third body tool to join two facing surfaces. Heat is generated between the tool and material which leads to a very soft region near the FSW tool. In this study, the experiments have been conducted on vertical milling machine (model 3KS) on AA 5052 and AA 6061.From the experiment work it is concluded that the process parameters tool pin profile (cylindrical), rotational speed (1950 rpm) and welding speed (44, 34 and 22 mm/min) which are taken into consideration affects the mechanical properties of the welding joint. In this study there are two output variables are calculated which are Rockwell hardness, tensile strength. The result for the tensile strength shows that there is a significant amount of effect of tool rotational speed on the welded joint and their mechanical properties. The high tool rotation speed results in improved tensile strength of the welded joint.