Development Status and Strengthening Methods of High-strength β-titanium Alloys

Titanium alloy is the highest specific strength metal material, widely used in aerospace field. With the progress of material technology, the research and development of high strength titanium alloy are gradually deepened. In this paper, the development status and main strengthening methods of high strength β titanium alloy at home and abroad were reviewed. The typical high strength titanium β alloys such as Ti-13-11-3, Ti-1023, Ti-5553 and Ti-55531 were mainly introduced. The design ideas of high strength β-titanium alloy were sorted out, the bottlenecks that restrict the development of high strength β-titanium alloy to better performance were pointed out, and the possible solutions were put forward. The strengthening methods of high strength β titanium alloy, such as solution strengthening, precipitation strengthening, work hardening, fine grain strengthening and additive technology, were summarized to provide guidance for further improving the strength of high strength β titanium alloy and optimizing the comprehensive properties of high strength β titanium alloy.