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

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.

傳統的金屬間化合物強度高但脆。然而, 多主元素金屬間化合物, 也被稱為高熵金屬間化合物, 可以同時具有高強度和延展性, 其中一些甚至在室溫下表現出可觀的斷裂韌性。在本文中, 我們從高熵金屬間化合物的概念、形成規則到結構和功能特性, 重點綜述了近年來有關高熵金屬間化合物的研究。迄今報導的結果清楚地表明, 具有獨特性能的高熵金屬間化合物在未來有望成為優秀的結構和功能性材料。