Comprehension Against The Sky, Graduation Project Nantianmen Project!

"Tsk!"

Zhao Fei clicked his tongue and said:

"Have you not slept in a few days?"

After finishing speaking, he looked at Luo Fei's room, clicked his tongue and said:

"As expected of a man with a girlfriend, this room is tidied up like an army!"

"...

Luo Fei was speechless for a while.

Take a look at the time - it's half past five in the afternoon.

When I go to bed in the morning, it's half past nine.

This sleep is just a few hours of sleep.

After regaining his senses, he lowered the air pressure when he got up, rolled over and got out of bed, and asked with his clothes on:

"How did you get in here?"

"Your door is unlocked."

Zhao Fei sat in the chair, looked at Luo Fei, and asked:

"Come on, you asked Sun Xiaoyu and Mr. Yang to tell me to go back to the base."

"What the hell is it?"

"Are you aware of the confidentiality clause?"

Luo Fei asked while putting on socks, seeing Zhao Fei rolled his eyes and said:

"I'm looking for you to develop a new type of aluminum alloy material for use in aircraft.

"The current aluminum alloy materials cannot meet my requirements in terms of performance."

"???"

Zhao Fei was stunned for a moment, almost ran away, and said:

"are you crazy?"

"The performance of the current aluminum alloy material does not meet your requirements?"

"What do you develop, and you need to re-develop new aluminum alloy materials?"

"A better fighter than that Xuannv?"

Luo Fei glanced at Zhao Fei and said nothing.

"Not right."

Zhao Fei didn't notice Luo Fei's eyes, thought for a while, and said to himself:

"Although I don't know the specific situation of Xuannv, it must be the current aluminum alloy material.

"Don't tell me that the thing you want to develop is going out of the earth?"

"Anyway, I think that this aluminum alloy is definitely enough for things on earth!"

Luo Fei got dressed and was about to go to the bathroom to wash up.

So drop a sentence:

"Just say, do you want to do it?"

Zhao Fei took a deep breath, followed up, and said:

"No, this thing, can it be developed if you want to develop it?"

"The aluminum alloy materials used in aerospace now have the best performance in the world, right?"

"What do you think is the most important aspect of the performance of this aluminum alloy material?"

After speaking, I saw Luo Fei was releasing water.

With a "Shet", he turned and sat back in the chair.

Then just sit there and start thinking.

Although I feel Luo Fei's nonsense, but still thinking about which direction to go if research and development.

After Luo Fei came out after washing up.

Then asked again:

"A new type of aluminum alloy material, which aspect of performance do you want to focus on improving?"

"Should I increase the strength, or reduce the density?"

This is aluminum alloy material.

Especially the two important indicators of aluminum alloy materials, which are the main materials of aerospace.

Increasing strength can increase multiple insurances.

Reducing the density means equal volume and lighter quality.

Can make larger aircraft.

In general, different aircraft, aircraft with different usage scenarios.

The performance requirements are different.

Luo Fei dried his face, drank a glass of warm water, and said:

"While increasing the strength, reduce the density of the material!"

"???"

Zhao Fei was stunned.

Listen, this is what a person who has studied material science can say?

It is a person who developed LF-1 material, what can he say?

If now is the barren era of material science.

This requirement is not difficult to achieve.

But now, domestic and international materials research has almost reached a bottleneck.

I can't find a way to break through.

Again, the current aluminum alloy material.

Individually increase the intensity, or reduce the density, skyrocketing.

Luo Fei even asked to reduce the density of the material while increasing the strength!

In this way, tell Party A that while getting bigger, there is also shrinking.

Is there any essential difference?

"Junior Brother Luo Fei!"

Zhao Fei sighed, looked at Luo Fei, and said helplessly:

"Let's just say, can we not have two requests at the same time?"

"For example, you want to find a girlfriend who is not only beautiful, but also has a good figure, a high IQ, and is also reasonable. Is this reasonable? Is it reasonable? Is it in line with the Basic Law?"

Why not?"

Luo Fei looked at Zhao Fei suspiciously, and said:

"Not to mention, Xiaoyu is the kind of girl you mentioned."

"Could it be that brother wants to say.

"Your current girlfriend is not beautiful enough, has a bad figure, average IQ, and doesn't understand Darcy?"

Zhao Fei stared wide-eyed, subconsciously glanced at the door.

Then he breathed a sigh of relief, rolled his eyes and said:

"Okay, I admit that the analogy I made is wrong, I'm sorry for the analogy!"

"But the truth, that's the truth!"

"Your request is too perverted!"

"Don't talk about developing something, it's just the idea of ​​research and development. I don't even have one now!"

Luo Fei grinned and said:

"You don't have R&D ideas, but I do!"

"What?!"

Zhao Fei jumped up from the chair, looked at Luo Fei in disbelief, and said:

"Are you serious?"

Luo Fei nodded.

"Fuck!"

Zhao Fei suddenly thought of the development process of Luo FeiLF-1 material, and was instantly excited.

Pulling Luo Fei's arm, he was about to walk out, saying:

"You have all the ideas, so why are you wasting your time here?"

"Go, go to the lab now!"

"It doesn't matter if your thinking is good or not, but it's good to have ideas!"

This is the truth.

In the field of material research and development, the most fearful thing is that there is no research and development idea.

as far as I can tell.

Materials science.

The birth of many new materials is full of uncertainties and accidents.

One is that the process of discovery or synthesis is uncertain and unexpected.

Second, after discovering or synthesizing new materials, the properties of new materials are full of uncertainties.

Graphene material is a typical representative.

well known.

Graphene material was originally torn out by tearing tape.

However, so far, this material is still in the stage of basic performance research.

I still don't know what performance it has.

If you want to use it as a material to make things, there is still a long way to go.

And Luo Fei said that there are research and development ideas.

How could Zhao Fei remain calm?

"Hey, Brother Zhao, don't worry!"

Luo Fei didn't let Zhao Fei drag him, glanced at the time, and said:

"It's time for dinner at six o'clock, I'm hungry, let's eat first!"

"Let's talk about things after dinner."

after dinner.

Luo Fei took the notebook and came to the Aerospace Materials Laboratory.

Zhao Fei has already packed everything up and waited.

"Quick, give me Kangkang!"

Zhao Fei rubbed his hands, talking impatiently, accepted Luo Fei's confidentiality agreement, and swiped his signature.

Then staring at the notebook in Luo Fei's hand, said:

"If you don't show me now, I promise you won't be able to leave this laboratory today!"

Luo Fei didn't believe it.

But he still opened the book, took out a few pages from it, and said:

"Hey, take your time, I'm researching these devices."

"Go."

Luo Fei took the paper and waved his hand.

Don't care about Luo Fei at all.

Anyway, Luo Fei has seen the equipment here more than once.

And the equipment that is about to be shipped back to China is much more advanced than most of the equipment here.

Especially high-precision things like electron microscopes.

Zhao Fei didn't directly open the paper Luo Fei gave, but closed it and picked it up again.

See if you have any ideas.

Only then did I open the pages that had been folded in half.

"Yo?"

Zhao Fei looked at the content.

I found a page with a table of several material ratios for the current aluminum alloy materials.

Unable to rejoice, he murmured to himself:

"This is to show me the original material ratio, so that I can know what things have been adjusted?"

Still, it's worth mentioning.

Just knowing the material ratio table cannot make aluminum alloy materials.

It's like you know what ingredients and seasonings are in a dish.

But still can't make the same dish.

During the processing of aluminum alloy materials, the temperature changes and the time sequence of the addition of certain elements changes.

Will result in inconsistencies in the final material properties.

However, for Zhao Fei.

Know the ratio of materials, because you can infer the properties of materials.

So he put aside the ratio table of the original aluminum alloy material, and opened the other pages.

The content is not long.

After reading it, Zhao Fei discovered that these are two completely different research and development ideas!

The original aluminum alloy is not an aluminum alloy material.

Words on the plane.

Generally used are duralumin, super duralumin, anti-rust aluminum alloy, forged aluminum alloy and cast aluminum alloy.

Duralumin is an alloy of aluminum magnesium copper.

This is also the most widely used aluminum alloy in the aerospace industry.

Good strength, toughness, fatigue resistance, good plasticity.

It is generally used to make aircraft skins, bulkheads and wing ribs.

Super duralumin is an alloy of aluminum zinc magnesium copper.

The strength limit and yield strength are high, and the load is large. It is used to manufacture machine-calculated surface skins, and the beam is good.

Anti-rust aluminum alloy has high corrosion resistance, fatigue resistance, good plasticity and weldability.

Used to make mailboxes, oil pipes, etc.

Forged aluminum alloy has high hardness and good corrosion resistance.

Manufacture of engine parts, joints, etc.

Cast aluminum alloy, small specific gravity, high corrosion resistance and heat resistance, used to manufacture engine casings, etc.

Zhao Fei noticed that Luo Fei circled duralumin and super duralumin in the ratio table.

at the same time.

At the beginning of new R&D materials.

Luo Fei also wrote down several important indicators of aluminum alloy materials such as strength, fatigue resistance, yield strength, small specific gravity, heat resistance and corrosion resistance.

"Didn't it mean to increase the strength while reducing the density, that is, the specific gravity?"

Zhao Fei read the ratio and performance requirements of the new aluminum alloy material to be developed given by Luo Fei.

The whole person was dumbfounded, and immediately shouted:

"Luo Fei, what the hell are you doing?"

"I won't talk about those super difficult synthesis conditions, what do you mean by these requirements?"

"Do you think there are materials that can meet these standards at the same time?"

"Do you want to study a specific type of aluminum alloy, or a general type of aluminum alloy?"

Luo Fei walked back slowly.

Sitting next to Zhao Fei, he fiddled with the notebook in his hand and said:

Why can't it be a special type and a general type of aluminum alloy material at the same time?"

...asking for flowers...

"OK!"

Zhao Fei gritted his teeth, pressed his veins throbbing on his forehead,

road:

"Then you here, suddenly propose a brand new idea."

"You use the ratio of making aluminum alloy, but add a lot of steel to make steel and aluminum alloy."

"What does that mean?"

Luo Fei pointed to the performance requirements on the paper, saying:

"The goal is to create a material that achieves this performance?"

"As for whether it is aluminum alloy or steel and aluminum alloy, does it matter?"

Is it important?

Zhao Fei looked up at Luo Fei, not knowing what to say for a while.

Ordinarily, it should not be important from a philosophical point of view.

After all, in aluminum alloy, there are several series according to the difference in performance.

For example, aluminum-manganese alloys in deformed aluminum alloys.

And aluminum-magnesium-silicon alloys in cast aluminum alloys.

At the same time, there is also a wrought aluminum alloy with iron added, which is an aluminum-copper-magnesium-nickel-iron alloy.

And this kind of alloy, said to be steel and aluminum alloy, seems to be okay.

It's just which element accounts for more and which element is placed in front.

But in terms of materials, it is very important!

Zhao Fei put down the paper, looked at Luo Fei, and said seriously:

"Do you know that although steel and aluminum alloys are super strong, they are also super light.

"But there is a fatal flaw?"

"Know."

Luo Fei nodded and said:

"Is it extremely fragile?"

"Yes, very fragile!"

Zhao Fei emphasized it again and said:

"This high-strength low-quality, but very brittle steel and aluminum alloy."

"Can it be used on a flying machine?"

What Zhao Fei said was a research result in the 1970s.

The scientists of Red Giant Bear mixed steel and aluminum in one way.

A new material with super strong performance and super light weight has been formed.

But the disadvantage is what he just said, it is extremely fragile!

Therefore, all the advantages are less serious than one disadvantage!

The principle is that when aluminum and iron atoms are fused together, they tend to form the tough crystal structure B2.

That's why it's fragile.

So far, no one has been able to solve this problem!

"That's what I think."

Luo Fei said something that was not written on paper:

"If the crystal structure B2 formed after the fusion of aluminum and iron atoms can be properly dispersed."

"Then the strength is greatly increased, and at the same time the fragility can be removed.

"The method I thought of was to induce the formation of this B2 crystal."

"If you can induce the formation of B2 crystals, it might be possible to disperse them."

Zhao Fei frowned.

How to say this way of thinking, not to say that it can't be done.

But it will be extremely difficult to operate.

After all, this is [inducing the formation of crystal structure 62 at the microscopic level!

The difficulty can be imagined!

"Okay, even if this idea is feasible!"

Zhao Fei decided to give it a try no matter what, but instead of asking:

"What about the density?"

"The density of steel and aluminum alloys is much greater than that of aluminum alloys!"

"You do this, I feel that you can make a steel-aluminum alloy whose strength is comparable to titanium alloy.

"But it's simply not possible to achieve what you want, a high-strength low-density material."

Some things can be seen by looking at the mass of atoms.

The atomic number of aluminum is 13 and the atomic number of iron is 26.

This means that iron is twice as heavy as aluminum.

So intuitively speaking, the weight of steel and aluminum alloys of the same volume is twice that of aluminum-iron alloys.

Therefore, what Zhao Fei said was not a problem.

Luo Fei smiled and said:

"Of course I understand that."

"But in my mind, there is another material [have you noticed?"

"This is the carbon fiber!"

When Zhao Fei heard the word carbon fiber, he immediately thought of something.

He really, subconsciously ignored the carbon fiber just now.

Because carbon fiber metal composite material is a new type of advanced composite material in the development stage.

Carbon is not easily wetted by metals, and metal carbides are easily formed at high temperatures.

Therefore, the production of this material is more difficult.

Therefore, carbon fiber is generally mainly used to make metal or alloy carbon fiber composites with a lower melting point.

Some R&D teams have thought about overcoming this problem.

But so far, no corresponding international research and development results have been heard.

Zhao Fei looked at Luo Fei and asked in disbelief:

"You don't want to say that you have theoretically solved this...

Luo Fei immediately said:

"Carbon Fiber Steel Aluminum Alloy Composites."

Zhao Fei numbly nodded and said:

"Like the previous carbon fiber ceramic composite material, you have also solved the theory of this material?"

Luo Fei nodded, shook his head again, and said:

"The theory is only half completed and needs to be verified by experiments."

"The current focus is to induce the formation of B2 crystals, I am not sure.

Zhao Fei put down the paper.

After a moment of silence, he stood up suddenly, slammed the table hard, and said:

"Then what are you waiting for? Let's do it!"

PS. The next chapter will be updated at 22:00!! Big!.