The Literary Life of a Science Leader

Chapter 63 Mu Jingchi dislocation

Mu Jingchi has never liked to use words to persuade others.

Because in a firm stand or self-awareness, words will appear weak and pale.But persuading with practical actions is much more powerful.

It's still the same small conference room.

Mu Jingchi handed out the experimental plans of the master's students one by one, with some comments on them.

Seeming to be in a good mood, Mu Jingchi's expression is no longer cold, but a half-smile is drawn, "You are all very good, have your own ideas, and put them into practice."

"I have already seen the experimental plan. It is innovative to a certain extent. Some places are feasible and some are not feasible, but overall it reflects the talents of each of you."

"I take that very seriously."

Mu Jingchi praised them with a smile on his face. Even if these plans do not work, the exploration of ideas is worthy of praise.

Even the classmate who used the rare metal sword to take the wrong approach was not easy. You must know that rare metals are not easy to use. How to use rare metals well is a big question.

"Let's discuss and discuss your plans now."

This time the meeting seemed more formal. Everyone sat down around the long table, and Mu Jingchi said.With the various annotations in the experimental plan, he still needs to explain them one by one and prove that their experimental plan does not work with irrefutable facts.

After the last meeting, the graduate students also had some understanding of Mu Jingchi's character.

Although it looks grim on the outside, it is still easy to talk, not harsh, serious and indifferent.

Flipping through their own experimental plan, they began to discuss some of Mu Jingchi's comments, and they were still very serious about this.

On the one hand, it is for the subject, and on the other hand, it is also learning.

You can always learn something by working on projects with people who are better than you. This is one of the reasons why they came to Mu Jingchi's research group.

Mu Jingchi would go home every day, and the study shrouded in the aura of the system greatly improved his knowledge.

Mu Jingchi, who has already seen their experimental plan, can say that he is at his fingertips.Answers to everyone's questions are clearly organized, from the shallower to the deeper, from the small to the big, and every detail.

The four master's students started back and forth with Mu Jingchi, but gradually they became good students taking notes, as if they were listening to an academic report.

From then on, they really admired Mu Jingchi.

Materials research does sometimes depend on luck, and breakthroughs in certain materials with strong properties also rely on luck, so Mu Jingchi will also be looked down upon by others.

It is believed that its previous material project is also a coincidence in luck.

But now they don't feel that way. Mu Jingchi, a direct PhD student who was awarded the 'National Outstanding Youth Award', is really expected.

The academic circle is still different from those literary and artistic circles. Whether it is strong or not, and how strong it is, can basically be seen from real discussions, and there is no uncertainty.

As far as material science is concerned, there is no mysterious theory to prevaricate.If it works, it doesn't work, if it doesn't work, it doesn't work, it's almost like mathematics.

It's not that it can be pretended. If there is no stock in the stomach, it will be exposed after three or two strokes.

"Doctor, what is your plan?"

At this time, they also understood Mu Jingchi's plan, but after being convinced, they did not reject it and asked Mu Jingchi.Their eyes were curious and probing, and they wondered in their hearts where did Mu Jingchi's experimental plan come from?

Mu Jingchi glanced at Ai Xiaosheng next to him.

Therefore, Ai Xiaosheng quickly projected the experimental plan that had been prepared in the laptop.

"My direction is dislocation."

Mu Jingchi began to manipulate the documents in the computer and explain it to these master students.

In real conditions, even at 0k, not all atoms in the material crystal are arranged strictly periodically, because there are some small regions in the crystal, and the arrangement of atoms in these regions or when passing through these regions Periodically get corrupted.

Such regions are called crystal defects.

Crystal defects are divided into point defects, line defects, surface defects and bulk defects.

Regardless of the defect, its concentration is very low.However, defects have a great impact on crystal properties.It affects the mechanical properties, physical properties, chemical properties and metallurgical properties of the crystal.

Dislocations are line defects.

Dislocation is the most important defect in crystal defects, which has a great influence on various properties of crystals, especially metal crystals, especially the mechanical properties.

Upon hearing Mu Jingchi's words, the faces of the four graduate students suddenly became serious.

Without him, dislocations are the focus in metallic materials.At the same time, dislocations are really difficult, the theory is very rich, and some concepts and properties are difficult to understand.

Ordinary students and materials workers only understand certain applications of dislocations qualitatively or semi-quantitatively.As for the detailed and quantitative analysis and discussion, it is basically necessary to read specialized monographs and literature.

"Our aluminum alloy project is mainly based on the three strengthening mechanisms of aluminum alloys, changing the movement of dislocations, hindering the movement of dislocations or obeying the movement of dislocations at the right time, so as to control the movement of dislocations."

"In order to achieve the goal of manufacturing high-strength aluminum alloys."

Mu Jingchi showed his experimental plan, which contained more detailed theoretical explanations and calculation analysis, so that these master students could also have a general impression.

As for immediately convincing them, Mu Jingchi didn't consider this point.

Mu Jingchi's theory of dislocation should be regarded as a brand new theory, but it is still connected with the existing theory of dislocation.

For example, the high strength of 18Cr-8Ni stainless steel comes from the segregation of Ni atoms of the alloy element into the stacking fault area of ​​the extended dislocation, forming a Suzuki air mass, which makes it difficult for dislocations to slip and climb.

Another example is that the strengthening mechanism of high-strength nickel-based superalloys lies in the existence of an ordered precipitated phase Ni3 (Ti, Al).

However, in order to transition from the above theory to Mu Jingchi's theory, it needs to be verified by experiments and supported by data, so that it is truly convincing.

If the previous scientific research results are practical materials, then the results this time are a brand new dislocation theory.

If Mu Jingchi wants to develop a brand-new aluminum alloy material, then this brand-new dislocation theory must be borrowed from him, and it will be shown in "Basics of Material Science (50 Edition)" 2069 years later.

The dislocation theory in it will also be named Mujingchi.

Perhaps in future textbooks, Mu Jingchi's dislocation theory will become an independent chapter.

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(End of this chapter)