材料科学技术(英文版)2022，Vol.129Issue(34) ：87-95.

Atomic scale structure dominated FCC and B2 responses to He ion irradiation in eutectic high-entropy alloy AlCoCrFeNi2.1

Jingyu Pang Ting Xiong Wenfan Yang Hualong Ge Xiaodong Zheng Miao Song Hongwei Zhang Shijian Zheng
材料科学技术(英文版)2022，Vol.129Issue(34) ：87-95.
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Atomic scale structure dominated FCC and B2 responses to He ion irradiation in eutectic high-entropy alloy AlCoCrFeNi2.1

Jingyu Pang 1Ting Xiong 2Wenfan Yang 1Hualong Ge 1Xiaodong Zheng 1Miao Song 3Hongwei Zhang 4Shijian Zheng5
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作者信息

  • 1. Institute of Metal Research,Chinese Academy of Sciences,7,Shenyang 110016,China;School of Material Science and Engineering,University of Science and Technology of China,Shenyang 110016,China
  • 2. Ji Hua Laboratory,Foshan 528251,China
  • 3. School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
  • 4. Institute of Metal Research,Chinese Academy of Sciences,7,Shenyang 110016,China
  • 5. Institute of Metal Research,Chinese Academy of Sciences,7,Shenyang 110016,China;State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China
  • 折叠

Abstract

Radiation-tolerant materials are widely desired in nuclear reactors.High-entropy alloys(HEAs)exhibiting superior mechanical performance and swelling tolerance are being considered as next-generation nuclear structural materials.However,an understanding of HEAs irradiation tolerance at an atomic scale is still lacking.In this study,the atomic scale irradiation response of AlCoCrFeNi2.1,composed of face-centered cubic(FCC)phase and B2 phase,has been systematically investigated at 298 and 723 K.The bubble vol-ume ratio of the B2 phase is much larger than that of the FCC phase under the same irradiation condi-tions,and hence,the FCC phase has superior swelling tolerance than the B2 phase.Also,order-disorder transformation occurred in both L12 and B2 phases.The different irradiation responses between the FCC and B2 phases,depend firstly on composition and secondly on crystal structure.The higher composi-tional complexity and complicated atomic-level lattice environment of the FCC phase contribute to better radiation performance than B2 phase.The results pave a way for exploring radiation-tolerant structural high-entropy alloys.

Key words

High-entropy alloy/AlCoCrFeNi2.1/He ion irradiation/Radiation tolerance/Electron microscopy

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基金项目

国家自然科学基金(51771201)

国家自然科学基金(52071124)

天津市自然科学基金重点项目(20JCZDJC00440)

国家重点研发计划(2018YFB0703402)

Open Research Fund from the State Key Laboratory of Rolling and Automation,Northeastern University(2020RALKFKT002)

出版年

2022
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量65
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