September 10, 2025MaterialsOpen Access

Structural Analysis of Joints Made of Titanium Alloy TI-6AL-4V and Stainless Steel AISI 321 with Developed Conical Contact Surfaces Obtained by Diffusion Welding

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The shear strength of the welded joints reaches 250 MPa, which is above the copper layer’s strength of 180 MPa.
Microstructural analysis highlighted significant diffusion of copper and titanium in the joint, improving mechanical properties.
The study demonstrates the effectiveness of diffusion welding with developed conical contact surfaces for bimetallic joints.
The resulting bimetallic adapters are suitable for connecting titanium high-pressure vessels with stainless steel pipelines.

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Analysis reveals shear strength of 250 MPa in titanium and stainless steel joints, suggesting advantages for high-pressure applications.

Karpovych et al. (2025) studied this question.

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