共晶高熵合金高温腐蚀的研究进展  

Research Progress on High Temperature Corrosion of Eutectic High Entropy Alloys

作　　者：李开洋 翟蕴龙 胡新宇 吴宏[2] 刘彬[2] 邢少华 侯健 张繁 张乃强[1] LI Kaiyang;ZHAI Yunlong;HU Xinyu;WU Hong;LIU Bin;XING Shaohua;HOU Jian;ZHANG Fan;ZHANG Naiqiang(College of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China;School of Powder Metallurgy Research Institute,Central South University,Changsha 410083,China;National Key Laboratory of Marine Corrosion and Protection,Luoyang Ship Material Research Institute,Qingdao 266237,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206 [2]中南大学粉末冶金研究院,长沙410083 [3]中国船舶集团有限公司第七二五研究所海洋腐蚀与防护全国重点实验室,青岛266237

出　　处：《中国腐蚀与防护学报》2024年第6期1377-1388,共12页Journal of Chinese Society For Corrosion and Protection

基　　金：北京市自然科学基金青年基金(2244104);技术基础科研计划项目。

摘　　要：共晶高熵合金由基体相和强化相交替组成,因兼具共晶与高熵的优点而表现出极为优异的力学性能,有望突破传统合金的强度-塑性兼容极限,在工程领域得到广阔应用。然而,在服役过程中,共晶高熵合金的双相结构可能会导致氧化膜异质结构,对其抗腐蚀性能产生影响。但相关影响机制并不明确,影响了其在高温环境中的应用。本文系统分析了不同体系共晶高熵合金的高温氧化行为,梳理了温度、氧化时间、合金元素等因素对腐蚀过程的影响,总结了高温氧化机理,比较了共晶高熵合金与传统合金的抗氧化性能,指出了未来的研究方向,为共晶高熵合金的理论研究和实际应用提供了基础和指导。Eutectic high entropy alloy(EHEA)is made up of alternatively ranged matrix and strengthening phases.The combination of eutectic and high entropy features endows EHEA extremely excellent mechanical properties,which may break the limit for strength-ductility compatibility and show a broad application prospects in various engineering fields.However,during the real service,the dual-phase structure of EHEA may result in a heterogeneous oxide scale,thus affecting its corrosion performance.The unknown effect of such heterogeneity affects the further application in high temperature application.Therefore,this study systematically analyzes the high-temperature oxidation behavior of different EHEAs,identify the factors(temperature,oxidation time,alloying elements)that affects corrosion,summarizes the high-temperature oxidation mechanism,compares the oxidation resistance between EHEA and conventional alloys and points out the future research direction,all of which may provide a reference for the future study and practical application of EHEA.

关 键 词：共晶高熵合金 高温氧化 扩散 双相 氧化速率 

分 类 号：TG171[金属学及工艺—金属表面处理]