Abstract
Friction stir welding (FSW) is a solid-state joining method in which a non-melting tool is used to fix two same or different materials by the application of heat. The impact of different FSW tool shoulder sizes on the mechanical and tribological behavior of an AA2024 – T3 manufactured butt joint is investigated in this experiment. The heat generated in the nugget zone and material churning change the mechanical and tribological properties of the welded joint. The tensile strength of the welded samples improves as the shoulder diameter increases. Whereas, the hardness of the prepared samples decreases with increasing shoulder diameter. With increasing shoulder diameter, the wear rate is likewise observed to be higher. So, 6 mm shoulder diameter was the optimum pin diameter for friction stir welding of AA2024-T3.
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