Titanium is used in foreign aviation jet engines

The aerospace industry is the main use of titanium, and jet engines are an important part of the main use of titanium. According to the statistics of the United States, from 1959 to 1973, the United States jet engine manufacturing industry used titanium accounted for 37% to 50% of the total consumption of the country, and the amount of titanium used in small subsonic jet engines accounted for 1/3 of its total mass.

In aero-engine, the medium-temperature component made of titanium material has higher fatigue strength, yield degree, creep strength and lower elastic modulus than steel material, so it can reduce the stress under fatigue load. Titanium alloys have high corrosion resistance and can greatly reduce the compression performance of jet engines. By increasing the pressurization ratio of engine compressor and the gas temperature of turbine inlet, the total efficiency of engine can be improved, thus increasing engine thrust, improving thrust-to-weight ratio and reducing fuel consumption. The total pressure ratio of engine compressors in the United States and Britain increased from 10-13 in the early 1960s to 20-27 in the 1970s, and is rising year by year, and the total pressure is expected to increase to 50. Without cooling technology, the temperature of turbine inlet of multi-role fighter has already exceeded 1650℃.

Because of harsh working conditions and engine size increased, light alloy and stainless steel is difficult to do, so the consumption is not, and titanium alloys and high temperature alloy due to its reduced production costs, the continuous improvement of processability, and adopting new technology, its advantage more and outstanding, in the application of the engine increases year by year.