High-oxygen TC4 alloy and preparation method thereof
By controlling the composition ratio of high-oxygen TC4 alloy and the vacuum suspension melting process, the problems of corrosion deformation and fatigue failure of titanium alloys in seawater were solved, and a high-strength, excellent plasticity and corrosion-resistant alloy was prepared, which is suitable for marine and deep-sea equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENYANG RES INST OF FOUNDRY
- Filing Date
- 2023-12-15
- Publication Date
- 2026-07-14
AI Technical Summary
Existing titanium alloys suffer from seawater corrosion deformation and fatigue failure under high-speed seawater scouring conditions, which prevents the improvement of material quality and restricts the development of deep-sea navigation.
By controlling the composition ratio of the high-oxygen TC4 alloy and adding Al, V, O, Y, Nd, Mo, and B elements, and employing a vacuum suspension melting process to precisely control the oxygen content, Cotillard and snock atmospheres are formed, hindering dislocation movement. Combined with the grain boundary strengthening effect of Y and Nd elements, the corrosion resistance and mechanical properties of the alloy are improved.
A high-oxygen TC4 alloy with high strength, excellent plasticity and corrosion resistance has been achieved, which significantly improves the overall performance of titanium alloys and is suitable for the field of marine and deep-sea equipment.
Smart Images
Figure CN117701945B_ABST