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 actually 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, and 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. 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 must also go through continuous trial and accumulation before it can be put into production. It can be arranged to 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, which compresses time infinitely and can also accurately specify the detailed process.
However, even for Wu Tong, before actually starting the experiment, she could only determine a certain process and specific parameters, such as temperature and time... Only by conducting experiments, truly being exposed to 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 superalloy technology eliminates grain boundaries, maintaining excellent comprehensive mechanical properties and structural stability at high temperatures, meeting the design requirements of high-thrust-to-weight ratio engines. Its manufacturing technology has become a core technology for the production of advanced engines, and Academician Xie is a leading figure in this field.
"High-temperature alloys, as alloy materials for single-crystal blade specimens, have extremely high requirements for fixed pulling speeds, simple step pulling speeds, and multi-step pulling speeds. We previously conducted numerical simulations of the temperature field, mushy zone, and solidification structure growth of single-crystal blade specimens, and conducted directional solidification experiments. Ultimately, we concluded that low-speed fixed pulling and multi-step pulling speeds can produce alloy materials with good single crystal integrity. High-speed fixed pulling and simple step pulling speeds will produce stray crystals in the edge plate of single-crystal material specimens."
Academician Xie carefully explained to Wu Tong the core points of single crystal technology. These were the core points that their team had diligently found 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 China Materials to the peak that they have not reached!
With gratitude, Wu Tong carefully absorbed the knowledge points and made them his own.
"Teacher, increase the reactor temperature to 2,400!"
After seeing Cheng Huanan's operation and setting the parameter at 2,000 degrees Celsius, and receiving more in-depth guidance, Wu Tong further intuitively deduced that this was not the most accurate temperature and needed to be increased, otherwise it would cause unevenness inside the metal and ultimately affect the failure of the synthesis. Even if it could be barely successful, it would not reach the ideal data.
Cheng Huanan did not hesitate and followed Wu Tong's blessing. 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 be carried out 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 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, and then follow the planned temperature gradient and directional solidification steps.
The key points were all those that Academician Xie had just emphasized. Academician Xie also led the team in practically step-by-step instruction. They successfully handled all the details, avoiding internal turbulence during the solidification of the molten metal. Using the high-speed solidification method, they continuously adjusted the pulling speed during stable operation to stabilize the process for solidification.
Finally, after careful, exquisite and steady operation step by step, they finally took out a few pieces of metallic blue-black leaf materials with a hint of silver, which had 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 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 anything else, the directional solidification operation was flawless. The ability to solidify the material proved a significant success; all that remained was testing and comparing its performance.
But just based on his experience, he could feel the unspoken superiority of this material.
The tensile machine was put into operation 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, and their excitement was self-evident. When did the tensile resistance of materials break through 1000 so easily and become as simple as a daily routine?
The final data, frozen at 1710MPa, stunned both the test operators and those assisting with the test, speechless for a long time. Another final test data point surpassing the simulation data. Is this going to become a routine for my God? Can this also become a routine? My God, truly, is the stuff of gods!
Then came the mechanical property tests, starting with room temperature creep performance, mechanical fatigue performance, thermal fatigue performance and impact resistance, and then various properties at high temperatures, as well as high temperature plasticity...
Then the thermal corrosion resistance and oxidation resistance test...
The high-temperature melting point test shocked the experimenters. The temperature exceeded the upper limit of 3000℃ instantly. The material had an extremely high initial melting temperature and its structure was extremely stable, which could withstand long-term high-temperature impact below 2400℃.
Ultra-high thermal conductivity, ultra-low thermal expansion coefficient and the lowest possible density, the physical properties are amazing!
This is truly the blade material they have always dreamed of!
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