Active liquid cooling for producing high-strength friction stir welds in aluminum alloys

E. A. Sidorov^a, A. V. Chumaevskii^a, S. Yu. Tarasov^a, V. E. Rubtsov^a, S. V. Fortuna^a, A. I. Amirov^a, D. A. Gur'yanov^a, E. A. Kolubaev<sup>ab

a</sup> Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, Tomsk
^b Novosibirsk State Technical University

Abstract: This study investigates a friction stir welding process for joining high-strength aluminum alloys. By implementing an active liquid cooling system and a post-weld aging treatment, a weld strength equivalent to the base material is achieved. The effect of cooling intensity on the microstructure and mechanical properties of the welds is examined. Optimal welding parameters for producing equal-strength joints are identified.

Keywords: friction stir welding, active cooling, high-strength aluminum alloy, equal-strength joint, post-weld aging.

UDC: 621.791.1

Received: 05.06.2025
Revised: 19.06.2025
Accepted: 23.06.2025

DOI: 10.15372/PMTF202515681

 English version: Journal of Applied Mechanics and Technical Physics, 2025, 66:5, 865–873

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