Titanium alloys have high specific strength, wide operating temperature range and excellent corrosion resistance characteristics.
So that it can be widely used in aviation and aerospace industry. In the 1950s, military aircraft entered the supersonic era and aircraft engines entered the jet engine era accordingly, requiring the use of new materials with higher specific strength at room temperature and medium temperature, the original aluminum and steel structure could not meet the new needs, and titanium alloy just had the industrial production capacity in this period, is meeting the needs of the development of supersonic military aircraft.
One of the important indicators to measure the development level of a country's aviation industry is the percentage of the demand for titanium for aviation in the total demand for titanium. Worldwide demand for aerospace titanium processing materials accounted for about 50% of the total demand for titanium, of which the United States from 1990 to 1997, the demand for titanium in the aerospace industry accounted for about 70% of the total demand for titanium in the United States, and the civilian amount in the aerospace industry was more than twice the military amount. The share of titanium additive applied to the aviation industry in China is less than 20%, and there is great room for development.
The proportion of new materials used in the field of military aircraft is much higher than that of civil aircraft. U.S. C-5 in service since 1970
Titanium alloy accounted for 6% of the mass, while the C-17 mass in service in 1992 has increased to 10.3%, the total mass of titanium parts reached 6.8t/frame, and the titanium alloy consumption of Russia's Ilyushir 76 transport aircraft reached 12%. In addition, the titanium consumption of the US B-2 bomber, the French Mirage 2000 and the Russian Cy-27CK fighter is 26%, 23% and 18%, respectively. The F22, one of the world's most advanced fifth-generation fighters currently in service, has a titanium content of 39% to 41%.
China's military aviation titanium alloy market still has a large space to expand. The J-fighter was put into production in the 1960s
The quality of titanium parts of the seven aircraft is only 9kg, the quality of titanium parts of the J-8 daytime aircraft in the 1970s increased to 60kg, in the 1980s, the amount of titanium in the J-8 II reached 2% of the total structure mass, the quality of titanium parts reached 93kg, the amount of titanium in the J-10 further increased to 3%, and the current titanium consumption of the J-20 reached 20%. There is still a gap compared with the titanium consumption of overseas fourth and fifth generation fighters.
