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Table 2 Welding parameters and tool dimensions used in this investigation

From: The effect of pin profiles on the microstructure and mechanical properties of underwater friction stir welded AA2519-T87 aluminium alloy

Process parameters

Values

Tool rotational speed (rpm)

1300

Welding speed (mm/min)

30

Pin length (mm)

5.7

Tool shoulder diameter (mm)

18

Pin diameter (mm)

5–6

Tool tilt angle, degree

Pin profile

Taper threaded pin profile

Tool material

Hardened super high speed steel