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High-entropy intermetallics: from alloy design to structural and functional properties

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Abstract

Conventional intermetallics are strong but brittle. However, multi-principal element intermetallics, also termed as high-entropy intermetallics (HEIs) in the recent high-entropy alloy literature, are strong but malleable, some of which even show appreciable ductility and fracture toughness at room temperature. In this article, we provide a focused review on the recent researches on HEIs, from the fundamentals, such as the concept of HEIs, the formation rules to the structural and functional properties of HEIs. The results hitherto reported clearly show that the HEIs with distinct properties could be a promising material for future structural and functional applications.

Graphical Abstract

摘要

传统的金属间化合物强度高但脆。然而, 多主元素金属间化合物, 也被称为高熵金属间化合物, 可以同时具有高强度和延展性, 其中一些甚至在室温下表现出可观的断裂韧性。在本文中, 我们从高熵金属间化合物的概念、形成规则到结构和功能特性, 重点综述了近年来有关高熵金属间化合物的研究。迄今报道的结果清楚地表明, 具有独特性能的高熵金属间化合物在未来有望成为优秀的结构和功能性材料。

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Acknowledgements

This work was financially supported by the General Research Fund (GRF) from Research Grant Council, the Hong Kong Government (Nos. CityU11213118 and CityU11200719) and the fund from City University of Hong Kong (No. 7005438).

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Authors and Affiliations

  1. Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, 999077, China

    Hang Wang, Quan-Feng He & Yong Yang

  2. Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China

    Yong Yang

  3. Department of Advanced Design and System Engineering, City University of Hong Kong, Hong Kong, 999077, China

    Yong Yang

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  1. Hang Wang
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Wang, H., He, QF. & Yang, Y. High-entropy intermetallics: from alloy design to structural and functional properties. Rare Met. 41, 1989–2001 (2022). https://doi.org/10.1007/s12598-021-01926-7

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