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Abstract
In the present study, the effect of Zn interlayer is analysed on friction stir welding of heat-treated AA6082 aluminium alloy. Friction stir welding joints are produced by preplacing the Zn particles interlayer into a gap of 0.7 mm between the abutting plates. Rotational speed is selected as process parameter to perform the welding. Thereafter welded joints are evaluated for microstructural aspects, microhardness and tensile properties. The microstructure analysis reveals that interlayer particles are evenly distributed in the nugget zone of joints. FSW joints produced with interlayer possess higher microhardness than the joints without interlayer. However, equivalent tensile strength is reported in both the cases. The fracture analysis revealed joint with interlayer possesses ductile failure under tensile loading.
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