A number of major scientific and technological projects in China made great breakthroughs in 2020
Among them, the high-performance titanium alloy turbine blades developed by JSHT Advanced Materials Technology Corporation have been successful. At present, they have passed the vibration fatigue assessment and achieved ideal results.
The next step will be the assessment of CJ1000A for the installed Yangtze River engine.
It will eventually be applied to China's large aircraft C919.
Nickel base superalloys are widely used in aeroengine compressors and low-pressure turbines. It has high strength and corrosion resistance in the range of 600-1000 degrees, but the disadvantage is that the weight is relatively large, thus increasing the overall weight of the engine and the weight of the aircraft.
The titanium aluminum alloy blade not only has better performance than nickel base superalloy, but also weighs only half as much as nickel base superalloy blade. It is an advanced generation of superalloy material than nickel base superalloy blade, and can also improve fuel efficiency by 20%.
In July 2006, as one of the three largest aeroengine manufacturers in the world, Rolls Royce will develop a new type of engine and sourcing titanium aluminum alloy blades worldwide.
The new engine has higher fuel efficiency. In order to reduce the cost, the blade is also required to be integrally formed. However, titanium metal material is extremely active. Only yttrium oxide can be used as a container for making blades. However, the surface of this material is powdery, which will affect the accuracy of blades. German scientists even concluded through computer simulation that this is an impossible task.
Dr. Yang, the chief scientist of JSHT, led scientists from various disciplines. After 10 years and numerous failures, he finally succeeded in preparing a binder, solving the container problem of titanium aluminum alloy blades, realizing the integrated casting of blades, and completing this impossible task.
Now, China's titanium aluminum alloy blade project has achieved commercial production, and the mass production of titanium aluminum alloy blades has been orderly carried out.
Not long ago, the company received a trial order for 100 products from Rolls Royce.