OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 26 No. 4 2024 Fig. 2. The number of publications on the topic “High-entropy alloys” in diff erent regions China leads in the number of publications, signifi cantly ahead of other countries. The USA ranks second, although its contribution is substantially smaller. India, Germany, and Japan follow, demonstrating moderate activity in this fi eld. South Korea and Russia have comparable numbers of publications. The United Kingdom, France, and Australia round out the list. These data highlight the high relevance of the topic of high-entropy alloys in the global scientifi c community, with China being a notable leader. This review includes publications from diff erent regions, but most of the research was conducted at universities and research institutes in China. The choice to study the developments of foreign scientists, particularly in China, over the past four years is due to several factors: China is one of the leaders in HEAs research and development. The country actively conducts research in this fi eld, creating new alloys and production technologies. Studying foreign developments allows assessing the level of science in other countries, as well as using their experience and achievements to improve our own research. Results and Discussion Methods of Obtaining High-Entropy Alloys High-entropy alloys can be obtained using several approaches. Various technical solutions can be used, including melting processes, powder metallurgy (mechanical alloying of powders), welding, spinning, splat cooling, self-propagating high-temperature synthesis, magnetron sputtering of targets, and powder mixture surfacing on a metal base. The fi rst HEAs were produced by induction and arc melting followed by casting [1, 2]. This process involved melting various metallic components of the alloy using an induction or arc furnace, after which the molten material was poured into molds to create the desired shape and size. A. S. Rogachev in his study [3] notes that the most predominant methods of obtaining HEAs are: melt crystallization; mechanical alloying in planetary mills combined with spark plasma sintering; spark plasma sintering; combustion synthesis (SHS). In addition to the methods listed, which can be called classical, other methods of obtaining HEAs have emerged in recent years. Scientists at the State Key Laboratory for Advanced Metals and Materials reviewed all alloy production methods for coatings and studied HEAs properties. They noted that the most promising method is laser additive manufacturing, which off ers high technological precision [4]. The laser additive manufacturing method allows for the creation of complex three-dimensional structures of HEAs directly from powders or wire. Laser melting of the material with high precision and
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