#5700. Microstructural evolution and mechanical properties of the Al–Cu dissimilar joint enhanced by stationary-dynamic shoulder friction stir welding

July 2026publication date
Proposal available till 23-05-2025
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Journal’s subject area:
Metals and Alloys;
Industrial and Manufacturing Engineering;
Computer Science Applications;
Ceramics and Composites;
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Abstract:
Material mixing and intermetallic compounds (IMCs) are the key factors that affect the mechanical properties of dissimilar metal joints. In this paper, a feasible method of stationary-dynamic shoulder friction stir welding has been developed, which reduces the mixing of materials and inhibit the growth of IMCs during the Al-Cu welding process. The stationary-dynamic shoulder was composed of a stationary shoulder with a larger diameter and a rotational shoulder with a smaller diameter. While the stationary shoulder provided the upsetting force to guarantee the weld formation, the rotational shoulder served for material stirring and heat input.
Keywords:
Interfaces; Intermetallic compounds; Mechanical properties; Microstructures; Stationary-dynamic shoulder friction stir welding

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