摘要
This work reviews recent progress in the alloy design,microstructure,and mechanical properties of refractory high-entropy alloys(RHEAs).What’s more,the underlying strengthening mechanisms and deformation behavior are discussed.Composed mainly of near-equimolar refractory elements,RHEAs have superior mechanical properties,especially at high temperatures.However,many of them have limited room-temperature ductility.Much work has been done to solve this trade-off,and some of the RHEAs have the potential to be used for high-temperature applications in the future.In addition to their mechanical properties,RHEAs have other attractive properties,such as biocompatibility and wear resistance,which are discussed.Finally,current problems and future suggestions for RHEAs are discussed.
综述了近年来难熔高熵合金(RHEAs)在合金设计、显微组织和力学性能方面的研究进展,并重点讨论了内在的强化机制和变形行为。难熔高熵合金主要由近等摩尔比的难熔元素组成,具有优异的力学性能,尤其是高温力学性能。然而,大多数难熔高熵合金的室温塑性有限。为了解决这一问题,研究人员已开展了大量相关研究工作,其中某些难熔高熵合金材料具有很大的高温实际应用潜力。难熔高熵合金除了具有优异的力学性能外,在其他性能方面也有优势,如生物相容性和耐磨性。最后,还讨论了难熔高熵合金目前存在的问题和对未来发展的建议。
基金
the National Natural Science Foundation of China(Nos.51871147,51821001)
the Shanghai Aerospace Advanced Technology Joint Research Fund,China(No.USCAST2020-35).
作者简介
Corresponding author:Qing-biao TAN,Tel:+86-21-54745597,E-mail:qbtan1981@sjtu.edu.cn;Corresponding author:Guo-liang ZHU,Tel:+86-21-54745597,E-mail:glzhu@sjtu.edu.cn。
