Biden is heartbroken!Xi'an University of Technology announced a major breakthrough, and more problems are ahead
History of technological blockade.
For many years, China has been challenged by the technology blockade policies of Western countries, especially those led by the United States. These blockades have not only severely hampered China's scientific and technological development, but have also prompted China to take a series of measures to strive for independent research and development to overcome technological constraints.
In hindsight, we can see that a typical example of a policy of technological blockade is the purchase of armored machinery. Armored machinery is a key piece of equipment used to excavate tunnels and construct underground works. When China needed to build subways and high-speed railways on a large scale, Western countries resorted to all sorts of obstructive means, refusing to ** armored machinery, and even raising equipment **. This forced China to seek independent R&D and manufacturing, which eventually overcame this constraint.
Another example is a satellite navigation system. China has long relied on imports of basic technical equipment such as atomic clocks, but Western countries have restricted the export of such equipment and even politically restricted China's satellite navigation program. This situation means that China faces huge technical barriers in this field and has to accelerate the pace of independent research and development.
In the face of technological blockade, China has gradually realized the importance of independent technology research and development. **A series of policy measures have been adopted to encourage scientific research institutions and enterprises to carry out independent innovation. These include financial support policies, policy incentives and intellectual property protection to promote scientific and technological development.
China's scientific and technological strength has been continuously strengthened, and a series of important progress has been made. China is already a world leader in areas such as artificial intelligence, quantum communications, and space technology. In addition, China's high-speed railway, electric vehicles, and 5G technologies are also widely recognized in the international market.
Xi'an University of Technology has made a historic breakthrough.
In the field of materials science, finding a material that is both strong and can maintain some resistance to impact is a long-standing problem. This may seem like a pair of contradictory features, but it is necessary for many engineering applications. For example, our cars need sturdy structures to protect passengers in a crash, but at the same time they need to be tough enough to absorb energy from an accident and avoid serious damage.
However, when it comes to more extreme environments, such as space or the depths of the ocean, the challenges for materials become even more acute. In space, space stations and satellites can be hit by high-speed space junk, which can reach speeds of up to 10 kilometers per second. For conventional metal materials, this impact can cause serious damage or even cause the outer coating to crack.
Therefore, to ensure that our rockets, spacecraft, and space stations can operate safely in space, the materials must be very strong, while also being tough enough to withstand the impact of these high-speed energies. In addition, the weight of space tools is also a key issue, as lighter materials mean less fuel is needed, which reduces costs.
This presents a new challenge for materials science: how to make materials lighter, more environmentally friendly, and easier to prepare, while maintaining their original properties. This problem has become an important direction for research and progress in the field of materials science in all countries around the world.
In this context, the research team of Northwestern Polytechnical University proposed duplex alloy selectivity"phase"The concept of recrystallization has laid an important foundation for subsequent research. In duplex metal materials, a key factor is the structure of the material, which we call duplex structure, which resembles the bones and muscles of the human body. In most cases, a person with good athletic abilities has strong bones, well-developed muscles and limbs, and very soft associated tissues. Similarly, if an alloy metal material has some toughness in addition to hardness, then it is a coveted material in materials science.
However, this ideal has long been unfulfilled due to the fact that the hardness and toughness of traditional duplex alloys are often mismatched and are far from meeting the requirements of engineering applications.
However, the research team at Northwestern Polytechnical University successfully strengthened the alloy by introducing the theory of selective phase recrystallization"bones", raising the alloy"bones"with"Muscles"strength. bones"with"Muscles"The coordination has been improved, and the brittleness problem of two-phase metal alloys has been fundamentally solved. The average elongation of the alloy material fabricated according to this theory is about 35%, and the actual stress at fracture exceeds 2 GPA. This discovery is a major breakthrough in the research of alloy materials, which will be widely used in the field of aerospace protection and high-quality armor in the future.
Chinese technology is booming everywhere.
In the previous article, we learned about the breakthrough of Northwestern Polytechnical University in the field of duplex alloys, and this is only the tip of the iceberg in the field of Chinese science and technology. The breakthrough in the field of metal alloys is only Biden"The American Dream"A beginning. In fact, China's progress in the field of materials science has attracted international attention.
China has made great strides not only in the field of duplex alloys, but also in the field of other materials. In aerospace, automobile manufacturing, construction engineering and other fields, Chinese scientific research teams continue to develop new materials, improve product performance, and reduce production costs. This makes Chinese products competitive in the international market and has a significant impact on the global industrial chain.
China's scientific and technological progress is not limited to the field of materials science. In recent years, China has made great strides in high-tech fields such as artificial intelligence, quantum communications, and space technology. For example, in the field of artificial intelligence, Chinese companies and research institutions have made great strides in machine learning and deep learning, driving the development of applications such as autonomous driving, medical diagnostics, and smart manufacturing.
In addition, China is at the forefront of the world in quantum communication technology, realizing the long-distance transmission of quantum communication, which has significant military and commercial potential. In the field of space technology, China has successfully carried out a series of manned space missions and built its own space station, demonstrating China's ambitions in space exploration.
The United States used to be the world's hegemon in the field of science and technology, but China's rise in science and technology poses a serious challenge to the United States. The escalating conflict between China and the United States has led the United States to impose aggressive restrictions on China's high-tech fields, especially key technologies such as wafers and ultraviolet lithography. However, the United States seems to have forgotten the fundamental problem that any high-precision equipment and products cannot do without the most primitive materials.
So far this year, China has imposed restrictions on rare metal resources such as rare earths, gallium and germanium, which hold an important place in the world. These restrictions have put the United States in a difficult position, as the United States relies on these rare metals to produce high-tech products. Biden originally planned to hit China by restricting key technologies such as chips, but he did not expect to be criticized by China.
The development of China's science and technology in the world is not only a challenge to the United States, but also has a profound impact on the world's scientific and technological level. China has become an important participant and promoter of global scientific and technological innovation, bringing more scientific and technological opportunities and cooperation possibilities to the world. As China continues to advance in various fields, the United States and other Western countries will have to reassess their science and technology strategies to better respond to China's rise. The boom in technology in China has led to the question of what the tech world will look like in the future