Application status of titanium alloy in aviation field
Over the past 50 years, the use of titanium alloy in commercial and military aircraft has steadily increased with the upgrading of their respective products. So far, in the domestic and international large aircraft market, the more advanced the new aircraft and the wider the aircraft, the more titanium is used.
Titanium alloys are used in major parts and components of aircraft
Military aircraft
1. Russia's Il-76 transport aircraft is 12 percent titanium
2. The French Mirage 2000 and Russian CY-27CK fighters contain 23% and 18% titanium, respectively
3. In 1950, the United States used industrial pure titanium to manufacture non-bearing components such as rear fuselage heat shield, air hood and tail hood on the F84 fighter-bomber
Civil aircraft
1. In the development process of Boeing B787 aircraft in the United States, in order to achieve a substantial weight reduction to achieve 20% lower fuel consumption, a large number of titanium alloy is used to replace aluminum alloy, and the titanium alloy consumption of the whole aircraft body reaches 11%.
2. The MS-21, a next-generation passenger aircraft under development in Russia, has 25% titanium alloy, making it the world's most heavily used civilian aircraft.
Titanium alloy and Composites on Boeing airframes (%)
Airbus aircraft titanium alloy and composite material consumption
Development trend of titanium alloys for civil aircraft abroad in recent years
Domestic development
1. Military aircraft: The J-8 fighter developed in the 1980s used only 2 percent titanium alloy and weighed 93 kg, while the J-10 fighter used 3 percent titanium alloy. In recent years, China has increased the application of titanium alloy in the field of military aviation, and it is expected that the amount of titanium used in China's new generation of high-performance fighters will reach 25% to 30%.
2. In the field of civil aircraft, the use of titanium alloy in China's commercial regional jet ARJ21 was 4.8 percent, and the use of titanium alloy in China's self-developed large passenger jet C919 reached 9.3 percent, surpassing that of the US Boeing B777.
