Methods of Manufacturing the High-Entropy Alloys

Abstract

In this chapter, the most promising techniques of the manufacturing of high entropy alloys are considered. Generally, methods could be divided by manufacturing of powders and corresponding powder metallurgy, casting techniques, coatings deposition and additive manufacturing methods of the high-entropy alloys. All of the mentioned methods are described in detail, both disadvantages and advantages are given. Technologies are ranged by the quantity of the published articles over the whole period up to December 2020. To determine the most popular manufacturing methods and to process the high-entropy alloys, the analysis of a number of published works was carried out, including papers, books and materials of conferences over the whole period up to December 2020 inclusively. Statistical data were collected from Scopus and Web of Science (WoS) databases, combined the most similar methods and presented as histograms. Based on this analysis, it could be drawn that one of the most widespread methods of obtaining bulk samples nowadays is vacuum arc melting technology. Manufacturing the coatings is performed using laser deposition in the majority of the presented works. The most widespread method of additive manufacturing is selective laser melting. The Research is supported by the Russian Science Foundation (project No. 20-19-00452).