Study of modified joint configuration in friction stir welding of dissimilar Al-Mg plates
by Uday Kumar; Uttam Acharya; Barnik Saha Roy
International Journal of Materials and Product Technology (IJMPT), Vol. 64, No. 3/4, 2022

Abstract: The current investigation is focused to study the suitability of modified joint configuration to achieve strong and stiff dissimilar joints of AA6061-T6 and AZ31B by friction stir welding. The welding were performed at a varying tool travel speed and at constant rotation speed and tilt angle by a taper threaded tool. The investigation includes the analysis of force, torque, power input, peak temperature of the welding; the weld bead surface, macrostructure, microstructure and joint strength. The outcome of the study shows better results with the modified joint configuration compared to the simple butt. Sound weld joints have been achieved for all the weld conditions using the modified configuration whereas the same has been achieved only at a tool travel speed of 0.75 mm/s for butt configuration. The maximum joint efficiency of 82% is achieved using the modified joint configuration at a tool travel speed of 0.75 mm/s. The article highlights: 1) a modified joint configuration to weld dissimilar Al-Mg has been studied; 2) joint efficiency of 85% has been achieved.

Online publication date: Mon, 16-May-2022

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