Experimental Comparison of TIG and Friction Stir Welded for Dissimilar Aluminum Alloy Plates

In this investigation, an attempt has been made to study the experimental comparison of the macrostructural and mechanical characteristics of fusion welds (TIG) and solid-state welds (FSW) of dissimilar aluminum alloy plates, SSM356 and SSM6061 (as-cast and T6). Aluminum alloys of 4 mm thickness were used as the base material for preparing a butt joint welded. The preliminary results of aluminum alloys in the as-cast condition showed that TIG (with filler), TIG (without filler) and friction stir welding made good welded joints of dissimilar aluminum alloys. The result of aluminum alloys in the heat treatment (T6) condition showed that different welding process could make dissimilar aluminum alloy joints. The ultimate tensile strength of dissimilar joints by FSW was 168.32 MPa and was superior to TIG (with filler) and TIG (without filler) welding. The study found that the two welding parameters significantly affect the tensile strength of the weld at the 0.05 level of significance. The experimental values were in good agreement with an R2 of 92.45 for ultimate tensile strength.