Director Wu's expression was serious, obviously he attached great importance to this technology, and he would never come to the door to find himself unless he had to, which made Zhang Yi also pay attention to it, so he was very careful when looking at the information.

Although he knew that this was a technology in the field of powder metallurgy, this technology was not an ordinary technology, and the "aircraft brake pad" technology that had been a sensation in China was actually the same as this.

Although the engine has been turned off during the landing process, the huge kinetic energy is still preserved, and the wheels rotate at high speed under the action of friction from the moment it lands, using the strong friction with the brake pads to produce a braking effect, which will produce a high temperature of 3000 degrees in the process, which is a huge test for the frame and brake pads.

The temperature generated by the aircraft during braking has long been melted and deformed by ordinary metal materials, but tungsten alloy materials still maintain good strength at ultra-high temperatures, which is one of the main reasons for making aircraft brake pads.

At present, the indicators required in Director Wu's report are even higher than the production requirements of "aircraft brake pads", and in Zhang Yi's opinion, this is very likely to have touched the technical forbidden area, so he must be cautious.

After receiving the information handed back by Zhang Yi, Director Wu frowned and asked, "Is there any problem with making this material?"

Zhang Yi thought about it, since Director Wu found him in this matter, he would have to make it clear to him sooner or later, it was better to get straight to the point, "Director Wu, we don't talk darkly, I have only seen such a request in military materials." ”

Director Wu smiled and said: "You're right, what we're researching here is military materials, but at this stage, I only need to get out the materials that meet this requirement, and I don't care about the later application." ”

Zhang Yi shook his head and said: "I am a student to make military materials, isn't it appropriate? I'm a student, and I still have to take classes." ”

Zhang Yi's worries are not unreasonable, he doesn't know what this material will be used for, but generally speaking, when it comes to the military industry, the secrecy measures are extremely strict.

He has a junior brother who studied mining after graduation to do nuclear physics research, radioactive uranium mines, this is more than ten years, I heard that in the northwest desert can no longer come out, the state subsidy to his family is very rich, but he is not allowed to see his relatives, unless his family is willing to go to the northwest to live with him.

Zhang Yi still has a lot to do, although he has countless advanced technologies in his mind, he doesn't want to sacrifice himself to complete a technology, which does not reflect his value at all.

It turned out that Zhang Yi was worried about this, and Director Wu smiled and said: "You are in class, but I heard from your senior brother that I often can't find you at school, don't worry, this military materials General Staff Department has been handed over to our research institute to do, and the level of secrecy has been reduced, as long as it conforms to the normal procedures." ”

Senior brother?Liu Rui?

This guy sold him again.

Since it has not risen to the point where he needs to leave his hometown and concentrate on scientific research, if it is purely a technical problem, Zhang Yi can discuss it.

Zhang Yi said: "If you just meet the requirements of the indicators, I think it should be fine." ”

"Really?" Director Wu was pleasantly surprised, in fact, he came to Zhang Yi this time, purely just to try, as Song Zhenyu, Secretary of the Party Committee of the Institute, said, Zhang Yi is a mining student after all, no matter how powerful he is, he may not be able to get the tungsten metal material.

And there are a lot of experts in the materials of the institute, and they can't develop it, if it is not a last resort, he will not come to Zhang Yi with a fluke heart, and when he heard Zhang Yi say that he can make it, he is not only shocked, but more questioning.

Zhang Yi nodded and said, "If the equipment is complete, it is still possible to achieve this level, but it also needs to do a lot of experiments." ”

"That's great. Director Wu calmed down and continued: "The experiment must be done, you have to be sure to do it, then it is only a matter of time before the results are produced, but do you know much about tungsten metal materials?"

Director Wu is still a little worried, this is not a trivial matter, the matter explained by the ministry has not been done well, it has made him distressed for a while, and now he suddenly heard that Zhang Yi can solve it, Director Wu still wants to determine whether what Zhang Yi said is true in addition to surprise.

Zhang Yi said: "Tungsten-based super-density alloy materials must be added with nickel, iron, manganese, cobalt, copper and molybdenum and other metal elements, which are solidly resolved in the binder phase, and the sub-grain interaction composed of high-density dislocation networks is used to improve the strength of the alloy, so as to microalloy the material, but I want to know, what will be used in this technology, I don't know if it can?"

After listening to Zhang Yi's introduction, Director Wu was stunned, he didn't understand the preparation process Zhang Yi said, in the research of tungsten alloy in the institute, only two metal elements were added to make a microscopic ternary alloy system, but what did Zhang Yi mean by microalloying?

Although Director Wu didn't understand the preparation process, he understood Zhang Yi's last sentence, and now it seems that Zhang Yi said that it was not a joke to be able to do it, and it was really possible to do it.

In this case, it is better to let Zhang Yi participate in the preparation of super-density tungsten alloy materials, thinking of this, Director Wu confessed: "What we want to develop is tungsten metal armor-piercing bullets. ”

"Tungsten alloy armor-piercing bullet?" I see, Zhang Yi finally understood that tungsten alloy is indeed the best metal for making this material.

Director Wu nodded and said: "Tungsten metal armor-piercing bullet is a topic that the General Staff Department has named our research institute to tackle, and it is also of great significance to the improvement of military equipment, so we have worked overtime overnight to conduct research, but we have no clue, since Zhang Yi can make an index, I don't know if you are willing to come to our institute to participate in the research?"

After thinking for a while, Zhang Yi shook his head and said, "I'm sorry Director Wu, I don't plan to participate in this project. ”

"This?" Director Wu didn't expect Zhang Yi to reject him.

Although this student even he can't see through it, it stands to reason that the tungsten and molybdenum separation project is still in cooperation, and the relationship between the two sides is also good.

But Zhang Yi doesn't care so much, he has a lot of things to do now, whether it is a smelter or sunscreen, it has reached a critical moment of production, and he doesn't know how to doppelg, of course, his own business is more important.

Besides, tungsten alloy armor-piercing bullets, in fact, there are already other research units in the process of development, in Zhang Yi's impression, this technology will enter people's field of vision soon, so he does not need to spend this time to engage in this technology.

Besides, after this technology comes out, the country will also accept it, and after the technological breakthrough in the future, this technology will be eliminated again, and it will not play any role at all, so it is better to let it go.

Director Wu said unwillingly: "Zhang Yi, this technology is very important to the institute, if you are willing to participate, the conditions are up to you, what do you think?"

"The conditions are up to me?" Zhang Yi shook his head and said casually: "Then if after this technology is made, the technical output is owned by the state, and the ownership of the technology belongs to me, are you willing?"

"It can't be. Director Wu immediately denied that this was a military material, how could it be attributed to a private person after it was made? This is obviously impossible.