Experimental Study of the Dissimilar Joining of Annealed 5052 and 7075 Aluminum Alloys by Friction Stir Welding

Authors

1 Department of Mechanical Engineering, - University of Birjand- , Iran

2 Department of Mechanical Engineering, ,- University of Birjand - , Iran

10.22044/jsfm.2026.17434.4041

Abstract

Friction stir welding, as a solid-state process, is a suitable option for joining aluminum alloys. In this study, the dissimilar joining of annealed 5052 and 7075 aluminum alloys using the friction stir welding process was investigated, and the effects of process parameters, including tool rotational speed and traverse speed, on the mechanical properties and process temperature were examined. The experiments were carried out at rotational speeds of 400, 800, and 1200 rpm and traverse speeds of 10, 30, and 50 mm/min. Macroscopic examinations showed that appropriate selection of parameters leads to the formation of defect-free joints, free from flaws such as tunnels and voids. Furthermore, the maximum tensile force of the joints was 12.6 kN, obtained at a rotational speed of 600 rpm and a traverse speed of 20 mm/min. The highest process temperature, 251.25 °C, was recorded at a rotational speed of 1200 rpm and a traverse speed of 30 mm/min. In addition, the maximum Vickers hardness across the weld cross-section was 92.37 HV, observed at a rotational speed of 1000 rpm and a traverse speed of 20 mm/min.

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Journal of Solid and Fluid Mechanics
Volume 16, Issue 2
July and August 2026
Pages 129-142

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