Spinodal decomposition and radiation damage of a FeCuMnNi high-entropy alloy

Qingwei Guo; Jinzhong Tian; Xiaotao Xu; Hua Hou; Peter K. Liaw; Yuhong Zhao

Nuclear Materials and Energy (Dec 2023)

Spinodal decomposition and radiation damage of a FeCuMnNi high-entropy alloy

Qingwei Guo,
Jinzhong Tian,
Xiaotao Xu,
Hua Hou,
Peter K. Liaw,
Yuhong Zhao

Affiliations

Qingwei Guo: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, P R China
Jinzhong Tian: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, P R China
Xiaotao Xu: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, P R China
Hua Hou: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, P R China; School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, P R China
Peter K. Liaw: Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Knoxville, TN, United States
Yuhong Zhao: School of Materials Science and Engineering, Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-performance Al/Mg Alloy Materials, North University of China, Taiyuan 030051, P R China; Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, P R China; Institute of Materials Intelligent Technology, Liaoning Academy of Materials, Shenyang 110004, P R China; Corresponding author.

Journal volume & issue: Vol. 37
p. 101534

Abstract

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The precipitation of Cu-rich phases during the irradiation process will reduce radiation resistance in Fe-Cu-Mn-Ni reactor pressure vessel steels. Therefore, high-entropy alloys with excellent radiation resistance are expected to replace reactor pressure vessel steels and become structural materials for fusion and generation IV fission reactors. This study investigated the phase formation, spinodal decomposition tendency, and radiation resistance of the FeCuMnNi high entropy alloy using a multi-scale method. The results show that FeCuMnNi alloy has a dual-phase face-centered-cubic structure. Here, for the first time, we found that the precipitation phase of the FeCuMnNi high-entropy alloy during the irradiation process is a Mn-rich phase rather than a Cu-rich phase found in conventional Fe-Cu-Mn-Ni reactor pressure vessel steels. Mn separates from the Cu-Mn-rich phase and forms Fe-Mn-Ni clusters with a Fe-Ni phase during irradiation.

Published in Nuclear Materials and Energy

ISSN: 2352-1791 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-materials-and-energy/

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