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This study aimed to investigate the metallurgical and mechanical effects of butt friction stir welding on AA6082 material through experimental means. Aluminum sheets, 6 mm thick, were subjected to friction stir welding at 2000 rpm and a traverse speed of 100 mm/min. Various analyses were conducted on the welded specimens to evaluate their microstructure, tensile, fatigue, and microhardness, including optical microscopy, FESEM, XRD, UTM, FCGR, and Vickers microhardness testing. A comparison with the base metal revealed that the welded specimens retained 53% of the tensile strength of the base metal, and there were changes in fatigue life and grain refinement in the nugget zone, thermo-mechanically affected zone, and flow arm zone.

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Metallurgical and Mechanical Performance of Friction Stir Welded AA6082 Alloy

  • 会议论文

  • 发表日期：

    2025年

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  • Gautam Kunal,
  • Amandeep Singh Shahi,
  • Ravindra K. Saxena,
  • Mani Kant Paswan

摘要

This study aimed to investigate the metallurgical and mechanical effects of butt friction stir welding on AA6082 material through experimental means. Aluminum sheets, 6 mm thick, were subjected to friction stir welding at 2000 rpm and a traverse speed of 100 mm/min. Various analyses were conducted on the welded specimens to evaluate their microstructure, tensile, fatigue, and microhardness, including optical microscopy, FESEM, XRD, UTM, FCGR, and Vickers microhardness testing. A comparison with the base metal revealed that the welded specimens retained 53% of the tensile strength of the base metal, and there were changes in fatigue life and grain refinement in the nugget zone, thermo-mechanically affected zone, and flow arm zone.