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Title:

Research Progress of Refractory High-Entropy Alloys

Author(s):

LIU Zhangquan;  QIAO Junwei

(Research Center for High�睧ntropy Alloys, School of Materials Science and Engineering,Taiyuan University of Technology, Taiyuan 030024, China)

Keywords:

high-entropy alloys;  refractory alloys;  microstructure;  mechanical properties;  wear resistance;  high temperature oxidation resistance

CLC:

PACS:

TG132��3+2；TG139

DOI:

10.7502/j.issn.1674-3962.201812016

DocumentCode:

Abstract:

Being different from traditional alloys, high-entropy alloys are composed of five or more principal elements. Moreover, the concentration of each element is between 5at% and 35at%. Due to their excellent high-temperature performance, high-entropy alloys attract the interest of many researchers. Refractory elements are metals with a melting point above 1800 ℃ and a certain amount of reserves, represented by tungsten. Subsequently, After their principal elements can be three or more kinds and the concentration of each element can be more than 35at%, refractory high�瞖ntropy alloys have achieved rapid development. The preparation methods, microstructure, and phase composition of refractory high-entropy alloys were introduced. The properties of refractory high-entropy alloys were described, including room-temperature and high-temperature mechanical properties, main strengthening mechanisms, wear�瞨esistant performance and high-temperature oxidation resistance. Finally, the challenges and potential applications of refractory high-entropy alloys were discussed in detail.