High-strength TC4 titanium alloy wire and preparation method thereof
Through the multi-pass roll mold and fixed mold pulling process, combined with annealing treatment, the problem of insufficient strength of the existing TC4 titanium alloy wire is solved, and a high-strength and good toughness TC4 titanium alloy wire is prepared to meet the needs of new generation models of aircraft and high-performance medical devices.
CN119663151AActive Publication Date: 2025-03-21XI AN JIAOTONG UNIV
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Patent Information
- Application Number
- CN202411929133.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2044-12-25
AI Technical Summary
Technical Problem
The traditional drawing process of the existing TC4 titanium alloy is difficult to meet the high-strength performance requirements and has low processing efficiency.
Method used
A high-strength TC4 titanium alloy wire is prepared by multi-pass roll mold drawing and fixed mold drawing.
Benefits of technology
A high-strength TC4 titanium alloy wire material has a tensile strength of more than 1180MPa, a yield strength of more than 1000MPa, an elongation after break of more than 5%, a cross-section shrinkage of more than 40%, and a good surface quality, and a uniform and fine microstructure, exceeding the performance requirements of medical device materials in relevant standards.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a high-strength TC4 titanium alloy wire and a preparation method thereof, and belongs to the technical field of titanium alloy wire materials. The method comprises the following steps: carrying out multi-pass roller die drawing on a TC4 titanium alloy hot-rolled wire blank in a high-temperature two-phase region, and then carrying out annealing treatment to obtain a wire material; then the annealed wire is subjected to multi-pass roller die drawing again, and the temperature is gradually reduced in the drawing process; and finally, the wire obtained after roller die drawing is subjected to multi-pass fixed die drawing in a low-temperature two-phase region, the temperature is not changed in the drawing process, and finally secondary annealing treatment is conducted to obtain the high-strength TC4 titanium alloy wire. The TC4 alloy wire prepared through the roller die and fixed die drawing method is high in strength and uniform and fine in microstructure, and the room-temperature tensile property of the TC4 alloy wire far exceeds the performance requirements of relevant standards such as GB / T 13810-2017 on medical instrument materials.
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