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This research aims to explore the feasibility and outcomes of cold welding titanium alloys and copper.

January 6, 2026MaterialsOpen Access

Characterization of Ti/Cu Dissimilar Metal Butt-Welded by the Cold Welding Process

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Experiments demonstrate improved tensile strength in cold welded titanium alloys and copper, suggesting better methods for dissimilar metal joints.

This research aims to explore the feasibility and outcomes of cold welding titanium alloys and copper.
Cold welding was used to join Ti-6.5Al-1Mo-1V-2Zr alloy and 99.90% pure copper.
Mechanical properties of the joint, microstructure, and fracture were tested and observed.
Phase composition analysis of the weld was conducted.
The tensile strength of the joint reached 284 MPa, indicating high strength relative to copper-based metals.
The elongation rate was 6.25%, reflecting good ductility in the weld joint.
Cold welding reduced Cu3Ti content, preventing significant decline in mechanical properties.

Xiao et al. (2026) studied this question.

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Experiments demonstrate improved tensile strength in cold welded titanium alloys and copper, suggesting better methods for dissimilar metal joints.