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Volume 13 | Issue 8 | Year 2026 | Article Id. IJME-V13I8P101 | DOI : https://doi.org/10.14445/23488360/IJME-V13I8P101

Tensile Properties of Friction Stir Welded AA6061-T6 Aluminum Alloy with Different Tool Geometries and Process Parameters

Ngoc-Tuan La, Hong-Ngoan Nguyen, Ky-Thanh Ho

Received Revised Accepted Published
22 Apr 2026 23 Jun 2026 15 Jul 2026 27 Aug 2026

Citation :

Ngoc-Tuan La, Hong-Ngoan Nguyen, Ky-Thanh Ho, "Tensile Properties of Friction Stir Welded AA6061-T6 Aluminum Alloy with Different Tool Geometries and Process Parameters," International Journal of Mechanical Engineering, vol. 13, no. 8, pp. 1-9, 2026. Crossref, https://doi.org/10.14445/23488360/IJME-V13I8P101

Abstract

This study analyses the influence of tool pin geometry and process parameters on the friction stir welding process using AA6061-T6 aluminum alloy. The experiments were conducted with varies tool rotational speeds, transverse speeds, and two types of tool pin geometry. Welded products then used for visual analysis in tension measurement for comparing. Results from the experimental revealed that increasing the transverse speed enhances both tensile strength and welded joints’ ductility. For the tool geometries, square pin produced higher tensile strength and joint efficiency than the taper-threaded pin. However, at higher transverse speeds, the taper-threaded pin exhibited greater elongation, which is likely attributed to enhanced helical material flow during the welding process. Factorial analysis indicated that transverse speed was the most influence factor affecting ductility, whereas the combined effects of rotational speed and transverse speed affect the joint efficiency. Results of the present research demonstrate that higher transverse speeds provide high joint efficiency and good ductility. These findings extend the practical processing window for friction stir welding of AA6061-T6 aluminum alloy and provide useful guidance for process optimization in industrial applications.

Keywords

Friction Stir Welding, Aluminum alloy, Rotational speed, Transverse speed, Pin geometry, Joint efficiency.

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