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The investigation aimed to apply friction welding to join two aluminium rods of equal length and diameter. The spindle rotational speed was set to 2000 RPM to achieve a defect-free weld. The characteristics of the friction-welded (FW) aluminium were evaluated through mechanical testing microstructure evaluation through SEM techniques. The weld nugget (WN) microstructure exhibited fine, equiaxed grains. In the thermo-mechanically affected zone (TMAZ), elongated grains were observed, while the heat-affected zone (HAZ) displayed coarse grains. The base material had a higher hardness value compared to the weld nugget. The hardness in the HAZ was the lowest due to the presence of coarse grains. The weld efficiency for the aluminium joints was 73% compared to the parent metal.

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Mechanical Characterization and Microstructure of Friction Welded Similar Metals Aluminium-6061

  • 会议论文

  • 发表日期：

    2026年

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  • E. Ravikumar,
  • S. Thamizhmani,
  • R. Palani,
  • S. Ramalingam

摘要

The investigation aimed to apply friction welding to join two aluminium rods of equal length and diameter. The spindle rotational speed was set to 2000 RPM to achieve a defect-free weld. The characteristics of the friction-welded (FW) aluminium were evaluated through mechanical testing microstructure evaluation through SEM techniques. The weld nugget (WN) microstructure exhibited fine, equiaxed grains. In the thermo-mechanically affected zone (TMAZ), elongated grains were observed, while the heat-affected zone (HAZ) displayed coarse grains. The base material had a higher hardness value compared to the weld nugget. The hardness in the HAZ was the lowest due to the presence of coarse grains. The weld efficiency for the aluminium joints was 73% compared to the parent metal.