高熵合金高温性能研究进展  

Research Progress on High Temperature Properties of High-Entropy Alloys

作　　者：贾宇浩 王志军[1] 吴庆峰 王晋宇 刘林翔 何峰[1] 李俊杰[1] 王锦程[1] JIA Yuhao;WANG Zhijun;WU Qingfeng;WANG Jinyu;LIU Linxiang;HE Feng;LI Junjie;WANG Jincheng(State Key Laboratory of Solidification,Northwestern Polytechanical University,Xi'an 710072,China)

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《铸造技术》2022年第11期935-947,共13页Foundry Technology

基　　金：国家自然科学基金(51874245);陕西省自然科学基金(2020JQ-720)。

摘　　要：高熵合金作为一种全新的合金设计理念,将合金设计的范围从传统合金设计所着眼的相图边角扩展到了相图中间广阔的区域,也造就了其独特的性质。在众多高熵合金种类中,有一部分具有广阔的高温应用前景,有望成为新一代高温材料,如高温高熵合金和难熔高熵合金等。高温高熵合金一般具有γ/γ′相结构,与传统镍基高温合金类似;而难熔高熵合金则通过多种高熔点难熔元素实现高温强度。本文将从短时力学性能、组织稳定性、蠕变、疲劳、抗氧化性方面对高熵合金的高温性能研究进展进行综述和讨论。As a new alloy design concept,high-entropy alloys expand the scope of alloy design from the corners of the phase diagram that traditional alloy design focuses on to the broad area in the middle of the phase diagram.This concept also creates its own unique properties.Among many types of high-entropy alloys,some have broad high-temperature application prospects and are expected to become a new generation of high-temperature materials,such as high-temperature high-entropy alloys and refractory high-entropy alloys.High-temperature high-entropy alloys generally have a phase structure ofγ/γ′,which is similar to traditional nickel-based superalloys.Refractory high-entropy alloys achieve high-temperature strength by adding a variety of high-melting refractory elements.In this paper,the research progress on the high-temperature properties of high-entropy alloys will be reviewed and discussed in terms of short-term mechanical properties,microstructure stability,creep,fatigue,and oxidation resistance.

关 键 词：高熵合金 高温力学性能 高温组织稳定性 高温抗氧化性 

分 类 号：TG139[一般工业技术—材料科学与工程]