The joining of dissimilar 6mm thickness plates of AA6082 & AA5083 was carried out using friction stir welding (FSW) technique. The process parameters are optimized using Taguchi L9 orthogonal design of experiments. Where the rotational speed (600, 900, 1200 rpm), travel speed (60, 90, 120 mm/min), and tilt angle (0, 1, 2 • ) were the parameters taken into consideration. The optimum process parameters were determined with the reference to tensile strength, yield stress, elongation of the joint. Friction stir welding of aluminium alloys has gained popularity in manufacturing industries such as ship building, aircraft production, railways and automotive. Effect of process parameter on tensile properties, microstructure, and hardness distribution of the welded joints were investigated.

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