Super Scientist

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Ye Chen now has two most important tasks, one is to get the air plane, and the other is to get the ship.

Our country must build a blue water navy, and it must move towards the deep blue. It cannot do without a strong navy. To build a strategic air force, it cannot do without advanced fighters.

After Ye Chen's efforts, the new aerospace, high-temperature alloy materials and composite materials required by the aerospace aircraft were all settled, which was a solution to the problems of the strategic air force.

However, naval issues have not yet been resolved. New gas turbines and superalloy materials have been solved, leaving only one ship material. In the past, Ye Chen did not have the time and energy to do this, but now it is necessary to solve composite materials and ship materials. It is also the most important task now.

"As soon as I solve the ship's materials, our country can start to build more advanced warships, such as super aircraft carriers and very large warships. With these advanced warships in service, our country's naval power will increase dramatically. By then, our The navy can become a real blue water navy, it can truly go to dark blue, and it can protect our 'border of interest.' Haha! This prospect is too wonderful! "Ye Chen became more and more beautiful, his eyes brightened.

Our country has already proposed to build a blue water navy and move towards the deep blue. However, due to the constraints of our country, this cannot be achieved yet, and it will take some time.

If Ye Chen resolves the ship's materials, it will definitely help our country to build a blue water navy's strategic plan, and it will accelerate the pace of our national navy toward the deep blue. Our country's "border of interest" can be maintained at an early date and better maintained.

As a military fan and as a patriotic angry youth, Ye Chen thought of this place and got excited. His eyes were full of wonderful little stars, and he could not wait to start immediately.

"Oh, yes, how much contribution is there? How long will it take for the ship technology to become available?" Ye Chen has long wanted to get the ship technology in the system.

The army of our country is undergoing a transformation. Where does this transformation come from? Mainly navy and air force.

As for the army, the army of our country has always been world-class. It used to be, it is now, and it will be in the future. We are not behind any country in the army, and we are even ahead.

However, the navy and air force have always been the weakness of our country, and our country is now vigorously developing the navy and air force. Once this plan is realized, the military strength of our country will grow unprecedentedly, and our country ’s military will be unprecedentedly powerful. By then, will the United States dare to show its strength around our country? Still dare to do things around our country?

If we can help this great transformation of our country, it will be incumbent on the patriotic indignant Ye Chen.

If it can be exchanged for ship technology, it will definitely help our country's blue water navy plan. Ye Chen wanted to redeem it early, but because the contribution value is not enough, it has been dragging on.

Now, Ye Chen is preparing to settle the navy's problem, which will be on the agenda.

Ye Chen immediately started the system, and saw that the contribution value displayed on the system was more than 13 million, which was more than 6 million away from 20 million.

"Well, the laser material factory put into operation this time added more than six million contributions to me, not bad! Very good!" Ye Chen rejoiced and said, "If you do it again, you can almost exchange for ship technology."

The aircraft carrier has always been a giant at sea and a weapon at sea. Even if our country has realized the plan of the Blue Water Navy, it is still difficult to rely on the aircraft carrier battle group to deal with the US aircraft carrier battle group. If this technology is available and new aircraft carriers are designed and manufactured, it will be another matter.

The aircraft carrier in the system is almost three times larger than the largest aircraft carrier in the United States. Not to mention anything else, just this one is enough to allow the American aircraft carrier to drink a pot.

What does it mean to be big?

Means stronger anti-attack ability and more difficult to deal with. What's more, it can carry more weapons, and its continuous combat capability is greater. It can sail at sea for a long time.

Such an aircraft carrier will have to carry several ships.

Well, America's most powerful aircraft carrier is no longer an adversary.

If it is paired with more advanced weapon systems, such as missiles, then American aircraft carriers will not be enough.

"Unfortunately, we have to wait." Ye Chen was a little regrettable again.

"However, new aircraft carriers are already in sight." It would be really difficult for Ye Chen to make up for more than six million contributions in the past. Well, it's not that difficult now.

Turning off the system, Ye Chen came to the laboratory and began to verify the ship's materials.

No matter what you do, the material is always the basis, as it is for airplanes, and so is warships. Our country cannot build Nimitz-class super aircraft carriers, which has a lot to do with ships.

Ship materials can be roughly divided into four stages according to the development history.

The first stage was after the middle of the 19th century, European countries began to build steel ships, that is, iron armored ships purchased by the Beiyang Fleet. The steel used for ship structures at that time was placed today as a typical medium-low carbon steel (0.13-0.2%), with lower strength, and was called "soft steel".

The second stage uses high-strength steel. In the early stages of steel ships, riveting was used rather than welding. As the requirements for the structure performance of warships have increased, the welding process has become dominant. The use of high-carbon and high-strength steels that have little effect on the riveting process has become a key condition for the weight reduction of warship structures and the ability to grow larger.

The third stage is the high-strength alloy stage. After entering the 1930s and 1940s, the welding process replaced the riveting process as the mainstream method of warship structure manufacturing. Due to the poor weldability of high-carbon high-strength steel, the higher the carbon content, the less reliable the welding performance is. The weld seam is very weak and very sensitive to notches.

Once a small opening is caused by fatigue or other reasons, it can easily lead to catastrophic structural brittle fracture.

After World War II, high-strength, high-toughness alloy steel has become the main development direction of the world's powers. The US HY series of steel, the Red Empire AK, AB series of steel, Tianchao 9XX series of steel, all belong to this category.

This type of alloy steel mainly relies on the addition of nickel, chromium, molybdenum and other elements to greatly improve performance. For example, the US built submarine HY80 steel has 2.93% nickel and 1.43% chromium.

The biggest problem with this type of steel is that as key properties such as strength continue to increase, more and more expensive and rare high-value alloy elements such as nickel and chromium are also used, the cost is high, and welding is becoming more and more difficult.

The fourth stage is only available in the United States. These alloys are expensive, with poor welding performance and difficult processing, which has led to a significant increase in manufacturing and processing costs. The United States has abandoned these expensive alloys and instead developed new high-performance steels with moderate strength and performance, easy welding, and low warship structure manufacturing costs.

The ship material to be developed by Ye Chen has excellent performance, good workability, and low cost.

Of course, alloys are also used. Ye Chen started the experimental equipment, began to verify, added various alloys, changed the alloy structure, and greatly improved its performance.

Through Ye Chen's efforts, the first verification was finally completed.

Ye Chen took out the material and couldn't wait to test it.

The first thing to do is to perform crystal phase analysis. Ye Chen started the testing equipment and put the material in. Soon, the results of the crystal structure came out.

Ye Chen took a look, his brows frowned tightly. Although the crystal structure was good, it was a great improvement over the existing ship materials, but it was still far away from Ye Chen's requirements.

The next test was the yield strength, which was over 7000Mpa.

"Amazing result." Ye Chen looked at the data and shook his head, dissatisfied.

At present, the yield strength of ship materials reaches 1000Mpa is very amazing. If the results are announced, it will definitely cause a global sensation.

However, Ye Chen was very clear that the yield strength of this kind of ship material given by the system was amazing, and it was not a problem to reach 10 million MPa.

With only 7,000 MPa, Ye Chen is definitely not satisfied.

The next welding experiment was conducted, and the results made Ye Chen quite satisfied.

In general, this ship material is very suitable for welding, which makes the workability very good and will greatly reduce the cost.

The United States abandons high-strength alloys and instead develops alloys with moderate properties, which has a lot to do with welding.

For example, HY80 needs to preheat the structural parts to be welded to 90-150 degrees Celsius, and HY130 needs to be raised to 100-175 degrees Celsius. In many cases, heat treatment is required after welding.

This makes the manufacturing process too expensive.

If it is an airplane, the block is not too big after all, although preheating will increase the cost, it is not unbearable. But for warships, that would be terrifying.

A large warship is several thousand tons, and all welding is heated. How much does this cost?

It would be even more frightening to build an aircraft carrier.

Even light aircraft carriers are tens of thousands of tons, there are many structural components that need to be welded, and the cost of heating is too scary.

Not to mention heavy aircraft carriers, super aircraft carriers.

Therefore, weldability and ease of processing have become a very important indicator of ship materials.

This ship material developed by Ye Chen is easy to process and can be welded at normal temperature without heating. This is very good news, which makes Ye Chen smile on his face.

After a series of tests, although the results are good, they are far from Ye Chen's expectations.

"I'm doing this for the first time, without experience, and it is normal to have all kinds of deficiencies. I believe that I will do better later." Ye Chen summed up the experience and lessons.

After completing these tests, Ye Chen has to perform one final test, which is the corrosion resistance test.

The corrosiveness of seawater is terrible, and it has strict requirements on the corrosion resistance of ship materials. If this one doesn't meet the standards, no other performance is good.

This test takes a short time. After Ye Chen put the material in, he did not rush to do it, but calculated it.

What is calculated?

Cost, of course.

Modern aircraft are not affordable in a few countries, not only because the technical threshold is too high, but also because the cost is high. For example, the F-22 costs as much as $ 150 million, which is too expensive. Even the United States struggled to raise them, let alone other countries.

However, this is far worse than warships.

The cost of a modern warship is much higher than today's most advanced warships. It would be more expensive if the aircraft carrier. If it were a super aircraft carrier, it would be prohibitively expensive.

For example, a Nimitz-class aircraft carrier costs about $ 4.5 billion. If it is in service for 50 years, it will cost $ 20 billion for maintenance.

The materials are expensive and many materials are used. This super aircraft carrier uses tens of thousands of tons of alloy. How much does it cost?

The numbers must be shocking.

"What's the cost?" Ye Chen began to calculate.