High-entropy amorphous alloys have excellent comprehensive properties and global research enthusiasm is rising

High-entropy amorphous alloy is an amorphous alloy material composed of five or more elements in equiatomic or near-equiatomic ratios. High-entropy amorphous alloys have excellent mechanical properties, physical properties, and chemical properties, and their comprehensive properties are better than high-entropy alloys and amorphous alloys, so they have received widespread attention.

Amorphous alloys are made using rapid solidification technology. The atomic arrangement exhibits the characteristics of long-range disorder and short-range order. There are no defects such as grain boundaries and dislocations inside. It has excellent magnetic properties, high resistivity, high strength, high hardness, and durability. It has performance advantages such as wear and corrosion resistance, but it is difficult to process at room temperature, and it is a metastable alloy. Temperature changes will convert it to a crystalline alloy, thereby losing excellent properties.

High-entropy alloys are composed of five or more metal elements in equal or approximately equal amounts. They have excellent magnetism, fracture resistance, wear resistance, corrosion resistance, high temperature resistance and other properties. They are similar to amorphous alloys. ratio, its high temperature stability and processing performance are excellent.

According to the“China High Entropy Amorphous Alloy Industry Market In-depth Research and Development Prospects Forecast Report 2022-2027” released by the Industrial Research Center It shows that high-entropy amorphous alloy was proposed in the 1990s. It combines the advantages of high-entropy alloy and amorphous alloy. It is a new alloy material that combines the multi-principal component characteristics of high-entropy alloy and non-crystalline alloy. The crystalline alloy has long-range disorder and short-range order structure characteristics. It is a new disordered alloy with a disordered and dense packing structure. It has better mechanical, physical and chemical properties, and its magnetic properties, fracture strength, corrosion resistance and biocompatibility have been significantly improved. promote.

High-entropy amorphous alloys can be widely used in electronics, electricity, new energy, medical care, precision instruments, industrial equipment, aerospace, national defense, nuclear industry and other fields. Divided according to different constituent elements, there are various types of high-entropy amorphous alloy products, such as ZrTi series, ZrTiHf series, FeCoNi series, etc. At present, ZrTi-based high-entropy amorphous alloys are a type of product that has been studied in depth and has many research results, such as ZrTiCuNiBe, ZrTiCuNiHf, ZrHfTiAlCoNiCu, etc.

In my country and overseas markets, various scientific research institutions and universities are enthusiastic about the research of high-entropy amorphous alloys. In China, there are mainly Institute of Mechanics of the Chinese Academy of Sciences, Huazhong University of Science and Technology, Northwestern Polytechnical University, Harbin Institute of Technology, City University of Hong Kong, etc. Overseas universities mainly include the Polytechnic University of Catalonia in Spain, the University of Seville in Spain, and Tohoku University in Japan.

Industry analysts said that the development speed of my country’s high-tech industry continues to accelerate, the market demand for high-performance new materials continues to grow, and the government encourages Supportive policies have been continuously introduced. Against this background, my country’s research and development of new materials has accelerated and the market size has continued to expand. In 2021, my country’s new materials market will be approximately 654 million yuan, with a compound annual growth rate of 18.6% from 2016 to 2021. It can be seen from this that my country’s new materials market has strong development momentum, and high-entropy amorphous alloys, as a type of new materials, have broad prospects for industry development.