Chapter 132 Dream
At the discussion meeting, based on the superior data of T4 titanium-aluminum alloy, they could predict that the data of T5 special blades would not be bad. However, when the simulation data was truly presented in front of him, it was undoubtedly more intuitive and impactful, making him eager to prepare the material immediately, test it on the tester, and check the data of the real material.
Cheng Huanan was as anxious as ever; everything was ready, now all that was left was to start work.
"Chengxu, arrange for the personnel to be in place. I can't wait!"
"Teacher, Academician Xie, let's start the experiment!" Wu Tong nodded affirmatively, and the group entered the laboratory and began to operate step by step according to the preparation process.
A new material, not to mention its research and development and design, often requires a lot of exploration and experimentation before it can take shape. The preparation process also requires continuous trial and accumulation before it can be put into production. It can be put into production in two or three months, which is an extremely fast speed.
However, under Wu Tong's deduction, this process is like pressing the fast-forward button. The time is infinitely compressed and the detailed process can be accurately specified.
However, even for Wu Tong, before actually starting the experiment, she could only determine the use of a certain process and specific parameters, such as temperature, time... Only by conducting experiments, truly coming into contact with the experimental process, and controlling it on the spot, can she determine the most accurate data.
The clock keeps ticking, the passage of time is ignored by busy people, the experiment slowly reaches the later stage, and the theoretical model is gradually becoming a reality.
The nickel-iron blade material for their experiment was melted and cast at high temperature in a reactor. Wu Tong combined it with titanium to make up for the shortcomings of the nickel-iron material and achieve the effect of a composite material, so it was named T5.
The core technology involved in this experiment is single crystal directional solidification. Single crystal high temperature alloy technology can eliminate grain boundaries, maintain excellent comprehensive mechanical properties and structural stability at high temperatures, and meet the design requirements of high thrust-to-weight ratio engines. Its manufacturing technology has become the core technology for the preparation of advanced engines, and Academician Xie is officially a big shot in this field.
"As the alloy material of single crystal blade specimens, high-temperature alloys have extremely high requirements for fixed pulling speed, simple step pulling speed and multi-step pulling speed. We have conducted numerical simulations on the temperature field, mushy zone and solidification structure growth of single crystal blade specimens, and carried out directional solidification tests. Finally, we concluded that the use of low-speed fixed pulling and multi-step pulling speeds can obtain alloy materials with good single crystal integrity. Single crystal material specimens under high-speed fixed pulling and simple step pulling speeds will produce stray crystals on the edge plate."
Academician Xie carefully explained to Wu Tong the core points of single crystal technology. These were the core points that their team had worked tirelessly to find through repeated experiments and failures.
However, at this moment, Academician Xie did not hide anything and taught Wu Tong in detail.
For such an outstanding child, he hopes to use these few skills as a small stepping stone for her to reach higher peaks, and also lead Chinese Materials to the peak that they have not reached!
With gratitude, Wu Tong carefully absorbed the knowledge and made it his own.
"Teacher, increase the temperature of the reactor to 2,400!"
After seeing Cheng Huanan's operation, which set the parameter at 2,000 degrees Celsius, and receiving more in-depth guidance, Wu Tong further intuitively deduced that this was not the most precise temperature and that it needed to be increased. Otherwise, it would cause unevenness inside the metal and ultimately affect the failure of the synthesis. It would be barely successful and would not reach the most ideal data.
Cheng Huanan did not hesitate and followed Wu Tong's instructions. Wu Tong was the leader of the experiment, so naturally he had to follow Wu Tong's ideas and did not need his empiricism. There could only be one person's voice in charge, otherwise the experiment would not work and would be over as soon as possible. This was also a good time to cultivate Wu Tong's control over the laboratory.
He called the child a teacher. In terms of the materials, he could only guide her with some basic knowledge. He thought about other aspects and thought more about the child.
"It's ready to be taken out of the furnace, Mr. Xie, Senior Brother Ruan, get ready for directional solidification!" Wu Tong looked calm, staring at the reactor with full readiness, and at the most appropriate time, he cooperated with Academician Xie to start the operation.
First turn on the furnace, then follow the planned temperature gradient and directional solidification steps.
The key points were all those that Academician Xie had just emphasized. Academician Xie led the team in almost hand-in-hand instruction. They successfully handled all the details, avoiding the internal turbulence of the liquid during the solidification of the molten metal. They used the high-speed solidification method to continuously adjust the pulling speed during stable operation and stabilize the process for solidification.
Finally, after careful, exquisite and steady operation step by step, they took out several pieces of metallic blue-black leaf materials with a hint of silver and a mysterious beauty from the solidifier.
They formed it in one go and created the blade shape in one step. The material was originally designed for blades, so naturally the blade model can best test the real data.
"That's it, perfect, no impurities!" Academician Xie gently stroked the surface of the material, which felt as smooth as baby skin. Apart from other things, the directional solidification operation was perfect. The experiment was successful in part because the material could be solidified. Now all that was left was to test and compare the performance.
But just based on his experience, he could feel the simple and unspoken superiority of this material.
The stretching machine was put on first, and the tensile resistance data rose rapidly, easily crossing 1000MPa. Looking at the data that was still rising, Cheng Huanan and Academician Xie looked at each other, their excitement was self-evident. Since when did the tensile resistance of a material break through 1000 so easily and become as simple as a daily routine?
The final data was fixed at 1710MPa. Both the test operators and the auxiliary testers were shocked and speechless for a long time. This was another final test data that exceeded the simulation data. Is this going to become a routine for my God? Can this also become a routine? My God, you are really a god-like person!
Then, we carried out mechanical property tests one by one, including creep performance at room temperature, mechanical fatigue performance, thermal fatigue performance and impact resistance, and then various properties at high temperature, as well as high temperature plasticity...
Then the thermal corrosion resistance and oxidation resistance test...
The high-temperature melting point test shocked all the experimenters. The temperature exceeded the limit of 3000℃ instantly. The material has a very high initial melting temperature and the structure is extremely stable, which can withstand high temperature below 2400℃ for a long time.
Ultra-high thermal conductivity, ultra-low thermal expansion coefficient and the lowest possible density, the physical properties are amazing!
This really is the blade material they have always dreamed of!
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