[China Aluminum Network] Because titanium aluminum alloy has the characteristics of small density, high temperature and high strength, so the application of CT-iAl alloy on automotive materials has also attracted people's attention. CT-iAl alloy exhaust valves have successfully passed harsh long-cycle engine tests. At the end of 1997, turbine impeller covers and air seals made of single-phase CT-iAl alloys were engineered. The main applications of titanium aluminum alloy in advanced jet turbine engines are:
(1) The specific rigidity of titanium-aluminum alloy is about 50% higher than that of commonly-used engine materials and can be used to make frames, seal supports, casings, partitions, turbine blades, and spout area parts.
(2) Titanium-aluminum alloy has good creep resistance in 600~750e, which can partially replace high-density nickel-base alloy.
(3) Good anti-combustion properties make it possible for titanium aluminum alloys to replace dense, expensive titanium-based flame-retardant alloys.
The United States has trial-produced parts for jet engines such as frames, seal brackets, impeller blades, spacers, seal brackets, impeller blades, and bulkheads. A new generation of space shuttles (x-30) has used titanium-aluminum alloy as a candidate for engine parts, brackets and skins. NASA will build a supersonic single-track rail transport vehicle. Ti-Al alloys are among them. Important material. It is predicted that titanium-aluminum alloys will be used in high-speed flight transport (HSCT) and single-stage orbiting (SSTO) space ships (RLV) in the future. The application of CT-iAl alloy plates in thermal structures and thermal protection systems has been included in the future European aviation. Transport Research Program (FESTIP).
In addition to its applications in the aerospace and automotive industries, titanium-aluminum alloys are also increasingly used in the chemical industry, biomedical materials (such as human hip implant replacement), offshore industries, and energy industries. In addition, the demand for TiAl alloys in sporting goods and consumer goods (such as golf clubs, bicycles, or jewelry accessories) is also increasing and has 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.
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