65 years ago, Cao Chunxiao began to study titanium alloys as soon as he graduated from Shanghai Jiaotong University. Titanium alloy was an emerging material invented in the United States at that time to make aircraft engines and propeller hubs. 65 years ago, Cao Chunxiao began to study titanium alloys as soon as he graduated from Shanghai Jiaotong University. Titanium alloy was an emerging material invented in the United States at that time to make aircraft engines and propeller hubs.
"In the 1960s, a Chinese fisherman was fishing at sea, and the net could not be pulled. It was later found that he had caught an advanced foreign plane. The plane fell on the coast of China at some point in time. , the aluminum alloy is completely corroded, and there is not much stainless steel left, but there is a metal part that is not damaged at all, and it is very bright, and its corrosion resistance is very good - this is titanium alloy." The 87-year-old founder of titanium alloy research, Cao Chunxiao, an academician of the Chinese Academy of Sciences, talked about the past a lot. Not long ago, he introduced the little-known history of China's development of titanium alloys in "Science and Innovation China Academician Lectures".
65 years ago, Cao Chunxiao began to study titanium alloys as soon as he graduated from Shanghai Jiaotong University. Titanium alloy was an emerging material invented in the United States at that time to make aircraft engines and propeller hubs.
"Titanium alloy is not only anti-corrosion, but its average density also is about 4.5 × 103kg, which is much lighter than 7.85 × 103kg steel, and its strength is similar to steel." Cao Chunxiao said that titanium alloy can make aircraft fly faster. more flexible.
But few people in China know about this secret material. They started from scratch and promoted the application of titanium alloy compressor blades and discs on the turbojet 6 engine. In 1966, China gave birth to the first aero-engine equipped with titanium alloy blades, filling the gap. After that, Cao Chunxiao and his colleagues applied titanium alloy blades and compressor discs to five or six models, replacing heavy steel parts and reducing the burden on the engine.
In 1973, through the Yun 10 project, Cao Chunxiao and others also studied the application of titanium alloys to the long-life turbofan 8 engine, and achieved success.
In 1979, the country decided to equip the Air Force with a new type of fighter jet. Its engine rotates more than 10,000 times a minute. New materials with more heat resistance and toughness are urgently needed to make the chassis. At that time, my country's metallurgical technology was not good, and the country planned to import it. After Cao Chunxiao found out, his heart was overwhelmed: "Can we only ask outsiders for help, can't we develop it ourselves?" He wants to strive for the nation.
After repeated research, Cao Chunxiao proposed a forging method with alternating high and low temperatures to make the titanium alloy more uniform and stable. The country no longer needs to import materials, and Cao Chunxiao also won the first prize in the National Science and Technology Progress Award. This material has become the most used titanium alloy in China's military industry.
Next, Cao Chunxiao developed titanium alloys containing the rare earth element neodymium, and various titanium alloys that are more heat-resistant and tougher... China's military titanium alloys are catching up.
At the same time, the consumption of titanium alloys in the civil field of China has also surged, becoming a big country of titanium alloys.
"Titanium alloy is anti-corrosion, it will not interact with the human body to cause allergies, so people's shoulder joints and skulls can be replaced with titanium alloys; dental implants are also made of titanium alloys, which are tightly fixed on the gums. Inside, you can plant porcelain teeth on top, and you can eat anything." Cao Chunxiao said that titanium alloys can also be used as tennis rackets, thermos cups, and cooking pots...
Cao Chunxiao also has titanium alloys in her dentures and pacemaker. "The things I study have improved my quality of life," he said with a smile.
7 million netizens listened online, and they all said: "This program is hard-core, and academicians teach everyone a lesson." "Scientists are our mainstay." "We are reluctant to miss every segment."...
Cao Chunxiao also sent a message to young netizens: "There must be a kind of love. For your work, whether it is chosen by yourself or required by the state, you must love it well and work happily."
