Cracking at 25°C?!

This...how is this possible!

Academician Duan Yonggong simply couldn’t believe the survey results.

You must know that although this all-light alloy cannot meet the standard of low-temperature alloy steel specially used for manufacturing liquefied petroleum gas and liquefied natural gas storage and transportation containers, which can be used below -196°C, when it was originally designed, it was thought that it would be used in

For use in the Northeast, the cold-resistant temperature design requirement is to reach -50°C. It can be used almost nationwide except Mohe Town!

Now it actually cracks at -25℃?!

Could it be that there was a problem during factory production?

Academician Duan Yonggong quickly arranged for people to go to the factory that customized this all-light alloy to get the original materials for testing. At the same time, he led a team to investigate more than 20 counties and districts where the minimum temperature fell below -25°C. All the

Both the "J-92 breakwater" used on soft soil and the "J-93 breakwater" used on hard soil have experienced large or small cracks!

Apparently there is something wrong with all the lightweight alloys used inside!

Duan Yonggong broke out in a cold sweat. Once the spring flood or summer flood comes, it is impossible for a dike with such cracks and signs of structural collapse to prevent the torrential flood!

Duan Yonggong was so worried that he couldn't even sleep when he thought that 20 or 30 counties and districts might become Zeguo, and the huge casualties it would cause.

The researchers who were sent to the factory to get the original materials soon completed the test. Sure enough, all lightweight alloys are not resistant to low temperatures, and not only are they not resistant to -25°C, they will even have hairline cracks below -10°C.

It’s just that the cracks are particularly obvious when it reaches -25℃!

In other words, this all-lightweight alloy cannot even reach the cold-resistant temperature index of -10℃! It is far away from the -50℃ design requirement!

Duan Yonggong was so angry that he personally led a team to the cooperative factory to investigate and hold accountable. As a result, an even more surprising thing happened. The factory actually made this all-lightweight alloy in strict accordance with the synthesis plan, and there were no problems in all processes!

The real problem lies in the synthesis scheme!

Academician Duan Yonggong is not good at materials science. This all-lightweight alloy was originally developed by the Institute of Lightweight Metal Materials under the Xia Academy of Sciences.

Academician Duan Yonggong was shocked and angry, and rushed to the Institute of Light Metal Materials non-stop.

The Institute of Light Metal Materials also attached great importance to this matter. They found the person who originally undertook this research project to conduct a detailed investigation. Only then did they discover that the person in charge of the project had made false claims in several indicators in the experimental report that year, including

The hardness and toughness are pretty good, only about 5% lower than the design index, which is not too serious. The most serious fraud is the low-temperature resistance index. In fact, it can only withstand -5℃, and a 0 is added at the end!

Precisely because several indicators were false, the price of this all-lightweight alloy is half that of ordinary steel!

This is a huge problem!

But Professor Ding Renjun, who was originally responsible for this topic, resigned more than a year ago and went abroad. At that time, seven researchers in the team also resigned. The remaining researchers were just newcomers doing odd jobs at the time.

They have no access to the experimental data, and they have no knowledge of the fraud.

Duan Yonggong also traced the researcher who was responsible for the acceptance of this all-lightweight alloy project at the Experimental Institute of Fluid-Structure Interaction Mechanics. He actually resigned long ago and disappeared without a trace!

The matter immediately became confusing. Did Ding Renjun find that he couldn't complete the research commission and had to bribe researchers from the Experimental Institute of Fluid-Structure Coupling Mechanics to fake it? Or was it a conspiracy arranged in advance, just to wait for high quality and price?

After the cheap and convenient "J-92 breakwater" plan was implemented on a large scale in the north, it suddenly collapsed and turned countless counties and districts in the north of Xia State into Zeguo?

No one can know the truth anymore.

Duan Yonggong no longer cared about pursuing the matter. He hurriedly reported the case and then chased the Light Metal Materials Research Institute, asking them to complete the original commission and improve the model "MAT-0020" as quickly as possible.

Made entirely of lightweight alloy, it meets the original design requirements.

However, the Institute of Light Metal Materials expressed that it was helpless. They had arranged for experts to study it and found that although the design idea of ​​this "MAT-0020" all-lightweight alloy was correct at the time, there were indeed problems that could not be solved. They wanted to continue

It is too difficult to conduct research to solve this problem of low temperature resistance. It is more practical to spend another year or two to design a new material that fully conforms to the "J-92 breakwater" plan.

But how could Academician Duan Yonggong wait another year or two?

There are only three or four months left before the spring floods in April and May. Before then, the problematic dams must be rebuilt, otherwise the consequences will be disastrous when the flood season arrives!

However, if we replace it with other readily available low-temperature steels on the market, the hardness, toughness, anti-corrosion and other indicators may not meet the "J-92 breakwater" plan. The entire plan will have to be drastically changed, and it will take at least a long time.

It's been a year or two.

Just when Academician Duan Yonggong was busy thinking of ideas, the news that there was an obvious problem with the core material of the "J-92 Breakwater" plan somehow spread, and all the areas that adopted the "J-92 Breakwater" plan

They became nervous and put pressure on Academician Duan Yonggong, especially in counties and districts in the north where there were obvious cracks in the dams, asking him to solve it in the shortest possible time, such as replacing it with a new one, which is safer and more reliable and can withstand ultra-low temperatures of -50°C.

, otherwise they will adopt other dam designs, and Academician Duan Yonggong and his laboratory will be responsible for all losses.

If compensating money can solve the problem and avoid the terrible scene of floods during the flood season, Academician Duan Yonggong will accept it. Even if he loses everything, he will give priority to compensation according to the contract.

But he has already asked, and no domestic dam solution provider is sure that the replacement of the dam will be completed within three months and that it will be foolproof, so no one is trying to grab this business, but they will inevitably gloat about the misfortune.

This chapter is not finished yet, please click on the next page to continue reading the exciting content! Academician Duan Yonggong is also very helpless about this. In fact, he has been in the limelight a bit in recent years, building the "J-92 breakwater" with low price, good quality and short construction period.

The plan easily defeated the low-efficiency, time-consuming, long-term and high-cost dam construction design plans in traditional counties, and became the preferred plan for many counties in the country to renovate or build dams. Only foreign countries have comparable design plans.

However, foreign dam design plans charge much higher fees. At the beginning, Duan Yonggong was unwilling to hand over the dam design plan that was related to the safety of people in his country to foreign experts, and they made a lot of money out of the design fees.

, a research team was formed to specialize in this "J-92 breakwater" plan.

Who would have thought that the core material would be severely cheated?

At this moment, the more than 20 northern counties and districts put forward alternative plans one after another. All of them were designed and provided by foreign companies, and behind these foreign design companies stood the shadow of the same large multinational company!

The design and implementation prices of these alternative plans are even more outrageous, five times more expensive than the original "J-92 Breakwater" plan proposed by Academician Duan Yonggong!

Five times!

Even if Academician Duan Yonggong sells the entire institute's equipment and all the patents in his hands, he will still not be able to afford the compensation demands of these two dozen northern counties!

At this time, Academician Yonggong finally realized that he had stepped into a trap that had been prepared for a long time, and the target of the other party should not be him, but the market position he currently occupies!

Whether it was to smash the conspiracy of this cunning and shameless multinational company or to continue his scientific research and academic career, Academician Duan Yonggong could not bow his head and could only grit his teeth and think of a way out.

Finally, considering the possible negative impact, the always proud Academician Duan had to lower his head and asked Vice President Wen Xuanping of Xia Ke Academy for help, and explained the ins and outs of everything in detail.

Vice President Wen of Xia Ke Academy could not sit still after hearing this. It was he who thought the "J92-Breakwater" plan was very good, so he strongly supported its promotion. He was completely unselfish and did not receive any benefits.

Now the original good intentions turned out to be bad, causing such serious problems in the dams that protect millions of people. Academician Wen Xuanping also felt a headache, so he had to take Academician Duan to report to the big boss Yang Chengke in person.

Lao Yang also attached great importance to it and quickly asked his secretary to summon experts in related fields for a meeting to discuss the fastest and best solution. Academician Duan Yonggong thought that Qin Ke and Ning Qingyun were experts in fluid mechanics, and they were said to be in computational materials science.

He also has profound attainments in this field, so he asked these two young professors to come to the meeting...

After listening to Academician Duan Yonggong's indignant statement, Qin Ke finally understood what happened. He would not stand by and watch this happen, even if it was reasonable.

But the research and development of a new material is not an easy task, especially since the Institute of Light Metal Materials has a very high level. They are at a loss what to do, and Qin Ke is not completely sure that this problem will be solved within a month.

Yes, although there are still three or four months left in the flood season, considering that after the research is completed, it will be handed over to the factory for production, and it will also be added to the "J-92 Breakwater" program for testing, it will have to be completed within a month at the latest.

After the research was completed, one month was also the final deadline for academician Duan to be given a reply by the more than 20 northern counties.

Seeing that Qin Ke was deep in thought and didn't reply, Academician Wen Xuanping next to him sighed: "The Institute of Light Metal Materials under the Xia Academy of Sciences is already one of the top alloy research institutes in the country. They can't solve the problem at tomorrow's meeting.

I’m afraid not many people will be able to stand up and solve this problem.”

"I hope there will be brave men under the heavy reward." Academician Duan Yonggong said with a bitter look on his face: "I have made a promise. No matter who can solve this problem, I will combine the 'J-92 Breakwater' plan and the 'J-93

I will give him half of the royalties from the breakwater plan, and donate the remaining half. Then I will donate these two patents to the country for free, just to make up for my mistakes. No matter what the reason is, I didn’t

It was my negligence to personally participate in the final test of 'MAT-0020' all-lightweight alloy." In fact, this cannot be blamed on him. After all, the Institute of Lightweight Metal Materials is very popular. Who would have thought that such a top institute could

Will any professor blatantly cheat?

Academician Duan Yonggong also said this to Qin Ke, indicating that he was not asking Qin Ke to help for free.

Qin Ke waved his hand: "Let's not talk about this. Since this matter is related to the safety of millions of people, I naturally have no reason to back down. I also don't want to see the conspiracy of foreign companies succeed."

These foreign design companies have really opened up the domestic market. In the future, they are likely to go everywhere under the banner of designing dams and conduct various surveys on the rivers and lakes of Xia Kingdom. Qin Ke does not want to see such a situation.

Qin Ke asked again: "Academician Duan, can you show me the relevant information first?"

"No problem." Academician Duan Yonggong pushed a thick stack of materials in front of Qin Ke: "Professor Qin, you take a look first. I originally planned to make these materials public at the meeting tomorrow."

At the beginning, Academician Duan Yonggong directly bought out all the information on this all-lightweight alloy model "MAT-0020". These information contained all the research data and the final synthesis plan. Originally, it was a commercial secret and could not be disclosed to outsiders, but at this time

Knowing that these materials contain falsified data, their importance will naturally drop significantly. Academician Duan really intends to make them public at tomorrow's meeting, even if it is to make some contribution to domestic materials science.

After all, although this all-lightweight alloy is somewhat different from its design requirements in terms of hardness, toughness, anti-corrosion and other indicators, it is considered advanced in the country. It is half lighter than ordinary steel and costs more than ordinary steel.

Steel is half the price. If used in an environment above -5℃, it is still very useful.

This chapter is not finished yet, please click on the next page to continue reading the exciting content! Qin Ke took it and concentrated on reading it at the speed of ten lines at a glance, and it only took about fifteen minutes to read it all.

He does have master-level chemistry knowledge in his mind, and he also has materials knowledge that is not inferior to that of most professors. However, having knowledge and being able to create a new material are completely different things. How many senior professors have spent their entire lives to develop a new material?

Plant new materials?

After reading this information, although Qin Ke was already familiar with the all-lightweight alloy of "MAT-0020" and indeed found that there were problems and signs of data tampering in more than a dozen details, he could not immediately

Find a clue to the solution.

The most important problem that normal low-temperature alloys need to solve is the toughness at ultra-low temperatures. This is usually achieved by infiltrating Ni, Zr, Ti, Nb and other alloying elements to refine the grains. However, how many trace elements are infiltrated is crucial.

For example, Ni will enhance the tendency of hot cracks during welding of materials and change the stress distribution inside the alloy. One point more or one point less will not be enough.

Even if Qin Ke has extraordinary mathematical abilities, he still needs to conduct continuous experiments through huge experiments to obtain experimental data before he can conduct analysis, modeling, and deduction.

One month is really a bit stressful.

Qin Ke suddenly remembered someone and asked, "Have you invited Academician Song Shiliang from Xia Ke University to attend tomorrow's meeting?"

Academician Song Shiliang is a leader in the fields of metal materials science such as high-temperature alloys, alloy steels, metal corrosion and protection, metal solidification theory, material fatigue and fracture, amorphous nanocrystals, etc. He is currently working as a technical consultant at the Charcot Institute of Materials in Beijing.
To be continued...