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Titanium Aluminum Alloy: Significantly Enhance The Aircraft Engine Temperature Tolerance
Jul 22, 2017

Aero engines are known as the heart of an airplane and hold the energy conversion of an airplane. The core components of the blade temperature bearing capacity directly determines the performance of the engine. In order to shorten the gap between China and Europe and the United States and developed countries, China has aero engine and gas turbine as a "major science and technology projects", and in March 2016 formally established the "China Aero Engine Group Co., Ltd.".


June 21, 2016, Nanjing University of Technology held a press conference, the school professor Chen Guang developed a new type of titanium aluminum alloy temperature tolerance can reach more than 900 ℃, than the existing core components of the engine material temperature resistance increased by 150 ℃ -250 ℃ above. June 20, 2016, the international top journal "natural materials" online published its related results.


Conference experts, the current made of China's aviation engine core components of the material is nickel-based alloy, the high temperature resistance of 650 ℃ -750 ℃, the temperature once higher, the material will be "creep" that is slowly deformed The Compared to nickel-based alloy, titanium alloy not only has its own advantages of small quality, but also has the strength, high plasticity.


It is understood that the Nanjing University of Science and Technology Materials Evaluation and Design of the Ministry of Education Engineering Research Center Professor Chen Guang team in the national 973 plan and other funding, the design of titanium aluminum alloy family members of the new "double crystal titanium aluminum single crystal" (PST titanium Single crystal), not only to its strength, plastic greatly enhanced its high temperature capability is to reach more than 900 ℃.


Experts, the United States GE has developed a code-named "4822", high temperature capability at 650 ℃ -750 ℃ titanium aluminum alloy, nickel-based superalloy instead, only to create a last two engine low-pressure turbine blades , A single engine weight loss of about 200 pounds, saving 20%, nitride emissions by 80%, significantly reduced the noise for the Boeing 787 aircraft, the successful flight test in 2007, officially put into commercial operation in 2009, became the time Aeronautics and materials in the field of sensational progress. And this material once applied to the entire engine blades, for the aircraft engine weight loss, noise reduction, fuel economy and other effects, will be more significant.


Nanjing Science and Technology will be completed as soon as possible the full performance of the alloy test, the real application of the Chinese aircraft engine blade manufacturing.