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难熔高熵合金在反应堆结构材料领域的机遇与挑战

  • 李天昕 ,
  • 卢一平 ,
  • 曹志强 ,
  • 王同敏 ,
  • 李廷举
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  • 1.大连理工大学 材料科学与工程学院 辽宁省凝固控制与数字化制备技术重点实验室 大连 116024
    2.中国核动力研究设计院 反应堆燃料及材料重点实验室 成都 610014
李天昕,男,1993年生,博士生

收稿日期: 2020-08-06

  修回日期: 2020-09-09

  网络出版日期: 2020-09-17

基金资助

国家磁约束核聚变能发展研究专项项目(2018YFE0312400);国家自然科学基金项目(51822402);国家重点研发计划项目(2019YFA0209901);兴辽英才计划项目(XLYC1807047);反应堆燃料及材料重点实验室项目(6142A06190304);西北工业大学凝固技术国家重点实验室资助项目(SKLSP201902)

Opportunity and Challenge of Refractory High-Entropy Alloys in the Field of Reactor Structural Materials

  • Tianxin LI ,
  • Yiping LU ,
  • Zhiqiang CAO ,
  • Tongmin WANG ,
  • Tingju LI
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  • 1.Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China
    2.Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610014, China

Received date: 2020-08-06

  Revised date: 2020-09-09

  Online published: 2020-09-17

Supported by

National Magnetic Confinement Fusion Energy Research and Development Program(2018YFE-0312400);National Natural Science Foundation of China(51822402);National Key Research and Development Program of China(2019YFA0209901);Liao Ning Revitalization Talents Program(XLYC1807047);Fund of Science and Technology on Reactor Fuel and Materials Laboratory(6142A06190304);Fund of the State Key Laboratory of Solidification Processing in NWPU(SKLSP201902)

摘要

传统反应堆结构材料性能已趋于极限,亟需开发新型材料。难熔高熵合金是以多种难熔元素作为主元的新型金属材料,具有独特的力学、物理和化学性质,尤其在高温力学、抗辐照等方面表现出优异的性能。难熔高熵合金在第4代核裂变反应堆包壳材料、核聚变堆面向第一壁材料等关键领域具有广阔的应用前景。本文结合具有代表性的文献,围绕难熔高熵合金的力学性能、抗辐照性能、抗氧化性能阐述了其强化机制与抗辐照机理,梳理了难熔高熵合金的发展脉络,在此基础上展望了难熔高熵合金在反应堆结构材料领域的应用前景。

本文引用格式

李天昕 , 卢一平 , 曹志强 , 王同敏 , 李廷举 . 难熔高熵合金在反应堆结构材料领域的机遇与挑战[J]. 金属学报, 2021 , 57(1) : 42 -54 . DOI: 10.11900/0412.1961.2020.00293

Abstract

Exploitation of traditional reactor structural materials tends to limits; thus, the development of novel materials is urgent. Alloying has long been used to obtain materials with desirable properties. In recent decades, a new alloying technique that combines multiple principal elements in high concentrations to fabricate new materials, termed high-entropy alloys (HEAs), has gained popularity. Refractory HEAs (RHEAs) consist of several principle refractory elements and are an important subset of HEAs. RHEAs have attracted immense attention owing to their unique mechanical, physical, and chemical properties, particularly their excellent high-temperature mechanical properties and radiation resistance. RHEAs are expected to be utilized in cladding materials for fourth-generation fission reactors and plasma-facing materials for fusion reactors. Combined with representative literature, this paper focuses on mechanical, radiation resistance, and oxidation resistance properties of RHEAs. Further, strengthening and radiation resistance mechanisms of RHEAs are explored, and the development evolution and prospects of RHEAs are proposed.

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