Impact Of Tool Profile And Material On Meechanical And Microstructural Behaviour Of FSSW Joints
DOI:
https://doi.org/10.63665/8mxymg53Keywords:
Friction Stir Spot Welding, Aluminum Alloy 6061, Brass IS319, EN31 Tool, Tool Geometry, Tensile Strength.Abstract
Friction Stir Spot Welding (FSSW) is an advanced solid-state joining process widely used for lightweight materials such as aluminum alloys and brass. In this study, similar and dissimilar joints of Aluminum 6061 and Brass IS319 were fabricated using FSSW with EN31 tools having taper square and diamond pin profiles. The weldments were produced using a vertical milling machine at a rotational speed of 900 rpm, feed rate of 25 mm/min, and depth of cut of 2.8 mm. Mechanical performance of the joints was evaluated through tensile testing using a Universal Testing Machine (UTM). Experimental results revealed that the taper square profile produced superior joint strength compared with the diamond profile for all material combinations. The highest ultimate tensile load of 16.92 kN was obtained for Brass–Brass joints fabricated using the taper square profile tool, while Aluminum–Aluminum joints achieved a maximum load of 3.82 kN. The study demonstrates that tool geometry significantly influences heat generation, material flow, and weld quality in FSSW.
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References
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