"I can only go on like this, take my time!"

Hao Chen also sighed along with Mu Jingchi's thoughts, "Let's see if these excellent people can find a feasible route!"

"Director Hao, there should be no shortage of materials for aero engines in our country, right?"

Mu Jingchi saw Hao Chen's somewhat gloomy expression, and expressed the doubts in his heart, "Is it necessary to be in such a hurry?"

It is normal and natural to attach importance to the research and development of materials. However, in Mu Jingchi's view, there should not be such a worrying situation in terms of aero engine materials, because the state can still do this in this regard.

In the field of casting superalloys, the performance of Huaxia's third-generation single crystal alloys has been comparable to that of foreign countries, and samples of blades with complex structures have also been trial-produced. For example, Wanze Co., Ltd. has established relevant R&D and engineering centers in Shenzhen and Changsha respectively, which has mastered the advanced technology of high-temperature mother metal and blade manufacturing, and successfully prepared samples such as precision casting blades, forged equiaxial wafers and powder turbine disks.

In the field of powder superalloys, Huaxia's FGH96 alloy baffles and FGH97 alloy discs have been applied to some types of engines.

"That's all you know. Overall, we are still lagging behind. Hao Chen understood Mu Jingchi's thoughts.

After all, Mu Jingchi has improved too quickly, and the interval between his undergraduate graduation and doctoral graduation is only half a year, and during this half year, he has also been obsessed with material research.

Very little is really known about the global superalloy sector.

After all, Mu Jingchi's research direction is not here.

"In the field of superalloys, the United States is in an absolutely dominant position. Under such conditions, the government also actively provides scientific research funds to support research and development in the field of superalloys. ”

In the field of high-performance materials, researchers at Michigan Technological University are said to have developed physics-based creep models for nickel-based superalloys, which are said to have achieved some success, and Ohio State University will develop new modeling capabilities to predict the long-term creep behavior of nickel-based superalloys for advanced supercritical steam turbines. ”

"NASA's Marshall Space Flight Center in the United States has developed a diffusion-strengthened molybdenum-rhenium alloy and used vacuum plasma spraying to manufacture high-temperature parts, which has also been fruitful. ”

"The Idaho National Laboratory also analyzes how precipitates form in superalloys, how they can improve the heat resistance of the alloys, and adjusts the heat treatment process to make the precipitates larger so that the matrix can resist extreme heat lifting conditions. ”

"Japan is in a dominant position in nickel-based single-crystal superalloys, nickel-based superplastic superalloys and oxide-grain-dispersion reinforced superalloys. ”

The research team composed of Tohoku Yoshito and Professor Yu Sato of Tohoku University in Japan has developed a MoSiBTiC alloy that can withstand ultra-high temperature and ultra-high pressure, which is a titanium carbide-reinforced molybdenum-silicon-based alloy, a new type of superalloy with strong toughness, and successfully tested its high-temperature strength in the temperature range of 14000-1600. ”

"A research team consisting of Associate Professor Koji Hagiwara of Osaka University and Takata Nakano has developed a material for turbine blades that can withstand high temperatures of more than 1,400 degrees Celsius. The study was for the addition of 0.05% molar chromium and iridium to a silicide complex alloy. From the perspective of material mechanical properties, compared with conventional silicide complex alloys, it is found for the first time that the material can suppress the problems of low strength and toughness in specific directions while maintaining its excellent mechanical properties. ”

Listening to a series of foreign achievements in the mouth of Director Hao, Mu Jingchi felt deep pressure, these research results can be said to be very excellent results, and have a very wide range of application directions.

"What about our country?"

Mu Jingchi didn't believe that when he was developing abroad, the country was stagnating, so he asked.

Director Hao listened to Mu Jingchi's words, and also adjusted from the slightly heavy tone just now, and said with a smile: "Of course, we also have a lot of achievements. ”

Hao Chen didn't think about it, and the words were thrown out directly.

According to the formation mechanism of solidification defects of single crystal blades, the Institute of Metals of the Chinese Academy of Sciences has put forward a number of effective solidification defect control measures in engineering, formed a set of whole-process control technology for large-scale manufacturing of single crystal blades, and successfully developed a variety of different types of single crystal blades, which has greatly improved the qualification rate of a variety of single crystal blades, and now continues to dig deeper. ”

"In addition, the development of high-temperature alloy blade rolling billet-cold roll forming in cooperation with the Belarusian Academy of Sciences not only improves the efficiency and accuracy of blade processing, but also significantly increases the fatigue life of blades. The team of Zhou Yixuan of the superalloy room of the institute has also made a breakthrough in the advanced technology of recovering rhenium metal in superalloys, which is of great significance to the reuse of rhenium and the development of superalloys in our country. ”

Speaking of this, Hao Chen glanced at Mu Jingchi.

"There is also your school, Huaqing University, Huaxia Aviation Development Yenching Aeronautical Materials Research Institute, and Huaxia Aviation Development Shenyang Liming Aero Engine Co., Ltd. jointly completed the project of 'Multi-scale Modeling and Simulation Technology and Engineering Application for Directional Solidification of Aero Engine Superalloy Blades'. ”

"You should know that, right?"

Mu Jingchi nodded, "I've heard of it." ”

"This project carries out macro and micro multi-scale coupling modeling of the directional solidification process of single crystal superalloy turbine blades, which can not only simulate the macroscopic temperature field, solute field, but also simulate the growth of dendrites. This achievement has been successfully applied to the manufacture of turbine blades, and it is the first domestic software applied in the development of monocrystalline/directional column crystal turbine blades for domestic aero engines. ”

"There's another one that has something to do with you. ”

"Something to do with me?" Mu Jingchi was curious, "What do you say?"

"The team of academician Zhang Ze of Zhejiang University found that the best position to add the precious metal rhenium in superalloys is the dislocation core of the interface dislocation network, and at this key position, rhenium can play a special role in making the material not easy to break by strengthening the interface strength. ”

"Then, your dislocation theory emerges. ”

Speaking of the part about Mu Jingchi, Hao Chen not only changed his tone, but also had a smile on his face.

"Although there is a big gap between us and foreign countries in superalloys, fortunately you have stood up, and the dislocation theory system is aimed at all crystal materials, which gives us the opportunity to overtake in corners. ”

Mu Jingchi smiled and did not show modesty.

"Then I'll continue to work hard and strive to complete the entire dislocation theory system!"

For him now, humility is also a kind of pride in the eyes of others, so there is no need to pursue humility too much. He's the age of flamboyance, and he's really made real results.

Aluminum alloy has been used in the global material market, and the dislocation theory, which is currently being studied, can also be applied in material forming technology.

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