高熵非晶合金成分体系特点及其综合性能研究进展

为了解决严苛环境下长期服役的重型装备敏感损伤失效等问题,开发新型性能优异的工程材料已迫在眉睫。高熵非晶合金是近年来备受学者关注的一种新兴的结构和功能材料,它以其特殊的成分设计理念,兼顾了传统非晶合金的结构优势与高熵合金优异的综合性能。尽管其诞生至今仅十余年,但其相关研究工作已取得了长足进步。鉴于此,本文简述了高熵非晶合金的概念与历史,归纳了影响高熵合金相稳定性的因素及其相形成规律,总结了现有高熵非晶合金成分体系及其主要特点,重点阐述高熵非晶合金的室温力学性能、锯齿流变行为和耐摩擦磨损性能的最新研究成果,并对高熵非晶合金的热稳定性研究进展进行概述,最后对其未来研究趋势与应用前景进行了展望。

Recent Advances in High-entropy Metallic Glasses: Comprehensive Properties and Composition Patterns Characteristics

In order to deal with the sensitive damage failure of heavy equipment in severe service environment for a long time, it is urgent to develop new engineering materials with outstanding performance. High-entropy metallic glasses (denoted as HE-MGs) is a new type of structural and functional material that has attracted much attention from scholars in recent years. With the special composition design concept, it takes into account the structural advantages of traditional amorphous alloys and the excellent comprehensive performance of high-entropy alloys. Although HE-MGs are barely 10 years old, its related research and exploration have made considerable headway. In view of the above-mentioned facts, the related concepts and evolution process are recapitulated. Herein, the factors affecting the phase stabilities of high entropy alloys and the rules of phase selection are summarized. In the meantime, the existing HE-MGs composition patterns and main characteristics and properties are concluded. The latest research progress on the room-temperature mechanical properties, serrated flow behavior, friction and wear properties as well as thermal stability are summarized. In the end, the research trend and application prospect of HE-MGs are put forward.