#7600. Assessing profile damage of uncoated and AlTiN coated FSW tools after successive travel on AA6061-T6 plate

October 2026publication date
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Journal’s subject area:
Industrial and Manufacturing Engineering;
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Abstract:
The quantitative assessment of profile damage of square (SQ) and threaded with three intermittent flat faces (TIF) tool pin was appraised and presented for both uncoated and AlTiN coated tools during friction stir passes on AA6061-T6 plates successively after different travel lengths. Significantly lower profile damage with small amount of profile twisting was noted for TIF tool pin as compared to the SQ tool pin owing to lower force and torque, as predicted by finite element (FE) results. For AlTiN coated tools, the pin profile damage reduced significantly due to high wear resistance, hardness and good adhesion of coating with the tool substrate.
Keywords:
Coating; Deflection; Friction stir welding; Strength; Tool pin profile damage

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