Tian Jitong was stunned for a moment, his anger erupted like a volcano in an instant, straight to the sky, he has been living in the praise and praise of teachers and classmates, as well as various relatives and friends, even if he occasionally makes mistakes, he is just regarded as a bumpy lesson that must be passed in the growth of the past is easily revealed, sometimes the teacher has to comfort a few words, when has he experienced such a reprimand. Pen, fun, and www.biquge.info

"You!" Tian Ji pointed at Chu Hao with the same finger, his face flushed with anger, and he couldn't even say anything.

Hearing this, Chu Hao didn't even raise his eyelids, and continued to be busy with his own stuff, what kind of thing, he looked at Uncle Hu's face, and he had been lazy to worry about Tian Jitong, but he didn't expect that he would kick his nose and face up, and use precious metals such as titanium and rare earths to push back and refuse to let himself do experiments, and he was crooked, questioning that he was refining scrap steel, and he didn't care if he tested his mechanical properties, he really thought he was a Pacific policeman - Guan Zhikuan.

Besides, how could Chu Hao not see his intentions, it was really disgusting, if it weren't for the fact that this was at school, Chu Hao would have slapped him and couldn't take care of himself.

"I'd like to see what you can make!"

Seeing that Chu Hao didn't pay attention to him at all, Tian Ji held back for a long time, and then he made such a cruel remark.

Looking at Chu Hao's physique, Tian Jitong felt that he couldn't beat Chu Hao, but let him go away like this, he didn't want to, this was his last chance.

When Chu Hao verified that what he refined was scrap steel, that is, when he fought back, he Chu Hao didn't say that what he refined was not scrap steel, when he saw it, he wanted to see what Chu Hao still had the face to say!

"Chu Hao, why don't I test it for you. Sun Dan said suddenly.

The right to speak in the laboratory has always been very clear, who has deep knowledge, who has strong scientific research ability, who has a high right to speak, whose words have strength, after all, what is right is right, who can lead everyone to success, lower cost, faster to success, that is who has the final say.

It is also the reason why researchers can be more proud, more self-conscious, and less concerned about other people's ideas, their biggest capital is the knowledge in their heads, and everyone else loves whoever goes.

With the ability that Chu Hao is showing now, as well as the natural closeness between her and Chu Hao, Sun Dan can now not care about Tian Jitong's thoughts at all.

"Senior sister, will you use these instruments?" Chu Hao asked with some surprise.

"I studied theoretical physics, what do you think?" Sun Dan said proudly.

Hearing this, Chu Hao covered his forehead, "I forgot, it's not difficult to do these things for those who study theoretical physics, the first class is from physics, the second rate is from chemistry, the third rate is from mechanics and electronics, and the last is from studying materials." ”

Hearing this, Tian Jitong squeezed his fist, eager to punch Chu Hao in the face!

"Chu Hao, you!" Tian Jitong scolded angrily.

"Why, I'm not right, I remember that Uncle Hu also studied physics, don't you think Uncle Hu is inferior to you?" Chu Hao said disdainfully.

Hearing this, Tian Jitong couldn't say anything when he was choked up in an instant.

There's no way, what Chu Hao said is good, although materials science sounds good, but there are not many people who apply for the exam, and most of them are transferred.

Although materials science has a vast space for development, it does not mean that students of materials science can also have the same development.

For future scientific research, the university is mainly interested in cultivating, so students of physics, chemistry, machinery, electronics and electrical appliances, and materials science must know a little.

The curriculum of the materials major reflects this point, and it is necessary to learn the four major mechanics, theoretical mechanics, material mechanics, fluid mechanics, quantum mechanics, as well as the four major chemistry, as well as a series of biology courses.

Studying everything means that you can do everything, and it is a little more difficult to study metals than those who study physics, and it is much more uncomfortable to study organic chemistry than to study chemistry.

After some testing, Sun Dan said in disbelief: "The tensile strength is 655σb/mpa, the yield strength is 635σb/mpa, the strain at break is 18%, and the elongation after fracture is 17.3%......"

After a large number of parameters were reported, Sun Dan breathed a sigh of relief, "The final conclusion is that this is a high-strength and high-toughness titanium alloy relative to the level of the 60s of the 20th century in China. ”

That is to say, the titanium alloy developed by Chu Hao is similar to the mechanical properties of the first titanium alloy developed by Huaxia, although compared with now, it is forty years behind, but considering that Chu Hao is just a high school student, it is already very powerful to be able to develop it, at least this is not scrap steel.

On the side, Tian Jitong's face, when Sun Dan just reported the data, had already turned into iron green, even if the mechanical properties were average, this was not a piece of scrap steel.

"Senior sister, I didn't seem to tell you, this is a high-strength and high-toughness titanium alloy. Chu Hao said with a smile.

"And what is this?"

Sun Dan was stunned for a moment, and then said in disbelief: "This can't be a high-temperature titanium alloy, right?"

Chu Hao nodded.

"Then I'm going to test the performance of titanium alloy at high temperatures. Sun Dan said with some excitement that it was unimaginable to see a high-temperature titanium alloy appear in front of him.

Titanium alloy has the characteristics of high strength, high heat resistance and good corrosion resistance.

The density of titanium alloy is generally about 4.51g/cm3, which is only 60% of steel, and the strength of pure titanium is close to the strength of ordinary steel, and some high-strength titanium alloys exceed the strength of many alloy structural steels. Therefore, the specific strength (strength/density) of titanium alloy is much greater than that of other metal structural materials, and parts with high unit strength, good rigidity and light weight can be produced. At present, titanium alloys are used in the engine components, skeletons, skins, fasteners and landing gear of aircraft.

The use temperature of titanium alloy is several hundred degrees higher than that of aluminum alloy, and it can still maintain the required strength at medium temperatures, and can work for a long time at a temperature of 450~500 °C. Titanium alloy still has a high specific strength in the range of 150°C~500°C, while the specific strength of aluminum alloy decreases significantly at 150°C. The operating temperature of titanium alloys can reach 500°C, while aluminum alloys can reach below 200°C.

Generally speaking, because of the high strength of titanium alloy itself, the possibility of making high-strength and high-toughness titanium alloy is relatively large, and it is easier to produce results, which is the reason why a newly established laboratory will choose high-strength and high-toughness titanium alloy first.

What can really have a large number of practical uses is high-temperature titanium alloy, which can sell more than 40,000 tons a year, and other titanium alloys do not even have a fraction of it.

However, high-temperature titanium alloys are also more difficult to develop.