Current status of titanium alloy applications
Due to the low density and high temperature strength of titanium-aluminum alloy, the application of C-T-i Al alloy in automotive materials has attracted people's attention. The C-T-iAl alloy exhaust valve has successfully passed the harsh long-cycle engine test. At the end of 1997, the turbine impeller cover disc and air seal ring made of single-phase C-T-i Al alloy passed the engineering demonstration. The main applications of titanium aluminum alloys in advanced jet turbine engines are:
(1) The specific stiffness of titanium-aluminum alloy is about 50% higher than that of common engine materials. It can be used to make parts for frames, seal supports, casings, partitions, turbine blades and spout areas.
(2) Titanium-aluminum alloy has good creep resistance in 600~750e, which can partially replace high-density nickel-based alloy.
(3) Good anti-burning properties make it possible for titanium-aluminum alloy to replace the dense and expensive titanium-based flame retardant alloy.
Some jet engine parts have been prototyped in the United States, such as frames, seal brackets, impeller blades and partitions such as frames, seal brackets, impeller blades and partitions. The new generation space shuttle (x-30) has used titanium-aluminum alloy as a candidate for engine components, brackets and skins. The National Aeronautics and Space Administration (NASA) will build a supersonic single-track transport aircraft. Titanium-alloy is one of them. Important material. It is predicted that titanium alloy will be applied to high-speed flight transport (HSCT) and single-stage orbit (SSTO) spacecraft (RLV) in the future. The application of CTi Al alloy sheet in thermal structure and thermal protection system has been incorporated into future European air transport. Research Program (FESTIP).
In addition to its applications in the aerospace and automotive industries, titanium and aluminum alloys are increasingly used in the chemical industry, biomedical materials (such as human implanted hip replacements), offshore industries, and the energy industry. In addition, titanium alloys are becoming more and more demanding in the field of sporting goods and everyday consumer goods (such as golf clubs, bicycles or jewelry), and have become a part of people's daily lives. In short, due to the excellent properties of titanium-aluminum alloy, its application and development prospects are broad.