Research progress of light-weight high-entropy alloys

doi:10.13251/j.issn.0254-6051.2022.04.016

Abstract

Abstract: High-entropy alloys is a new emerging class of metallic alloys which are constituted by multiple elements with an equi-molar or near equi-molar mixing. But its larger density greatly limits its application. In order to reduce the density of high-entropy alloys, light-weight high-entropy alloys composed of light alloy elements such as Al, Li, Mg, Ti, etc. appeared. Because of its potential application prospects in transportation and aerospace fields, it has attracted widespread attention. The current research status of lightweight high-entropy alloys is described, and the component design methods, phase formation and preparation processes of lightweight high-entropy alloys are analyzed, and then the various properties of different types of lightweight high-entropy alloys are summarized, including high strength, high hardness, high temperature oxidation resistance, corrosion resistance, etc. Finally, some existing problems of light-weight high-entropy alloys are summarized and the future research directions of light-weight high-entropy alloys are prospected.

Key words: light-weight high-entropy alloys, mechanical properties, phase composition, component design

CLC Number:

TG139

Luo Zaibin, Fan Zize, Peng Zhen. Research progress of light-weight high-entropy alloys[J]. Heat Treatment of Metals, 2022, 47(4): 100-107.

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