Effect of rotational direction on friction stir spot welding of aluminium alloys (AA6061-T6).

Autor: Hamzah, Mahmood Mohammed, Saad, Mursal Luaibi, Mezher, Marwan T., Barrak, Osamah Sabah, Chatti, Sami, Ben-Elechi, Slim, Hussain, Sabah Khammass
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Zdroj: AIP Conference Proceedings; 2024, Vol. 3105 Issue 1, p1-8, 8p
Abstrakt: The friction stir spot welding (FSSW) process was utilized to join a similar metal alloy of aluminum AA6061-T6. The rotating direction (clockwise and counterclockwise) and rotation speed (1280, 1440, and 2580 rpm) were employed as two joining parameters and studded in the FSSW process. The shear test was performed to evaluate the effectiveness of the lap joint. The joint appears to be a good welded and perfect solid-state mixing of the two similar metals. The joint strength rose as the rotating speed was raised from 1280 to 1440 rpm; thus, the joint's efficiency gradually decreased when the rotating speed was increased from (1440 to 2580) rpm. Revising the rotational direction from counterclockwise to clockwise increase the shear strength of the joint. The heat generation between the tool and sample was increased when the tool's rotational direction was in a clockwise rotation. The generation of heat for plasticizing the material in the joint was the basic responsible for mixing the two samples in the joining area. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index