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Chemical ordering effect on the radiation resistance of a CoNiCrFeMn high-entropy alloy

文献类型：期刊论文

作者Li, Yangen; Du, Jun-Ping; Yu, Peijun; Li, Rui3; Shinzato, Shuhei; Peng Q(彭庆); Ogata, Shigenobu4
刊名COMPUTATIONAL MATERIALS SCIENCE
出版日期2022-11
卷号214页码:111764
ISSN号0927-0256
关键词High-entropy alloy Radiation resistance Chemical short-range order Defects
DOI10.1016/j.commatsci.2022.111764
英文摘要The chemical ordering of CoNiCrFeMn and its effect on radiation resistance is analyzed in this study via Monte Carlo (MC) annealing simulation and molecular dynamics (MD) radiation damage simulation. MC annealing at a lower temperature of 600 K forms an initial stage Cr-rich region in CoNiCrFeMn due to a strong chemical ordering-driven phase decomposition; whereas, annealing at a higher temperature of 1100 K forms a chemical short-range order (CSRO). MD radiation damage simulation shows that the Cr-rich region formed by 600 K annealing accelerates the aggregation and the evolution of defects, facilitating more dislocation loops formation. On the other hand, the CSRO structure formed by 1100 K annealing effectively delays the growth of defect number and tends to reduce the dislocation density and defect diffusion, suggesting better radiation resistance. However, the CSRO structure is destroyed by radiation, thus these advantages of CSRO will disappear in due time if CSRO cannot heal. Fortunately, since the CSRO can recover at working temperature of 1100 K, we speculate that under the working temperature of 1100 K and with a modest radiation damage rate, the advantages of CSRO can maintain for a long time. We finally discuss the condition of the CSRO preservation by proposing a CSRO radiation damage - diffusion healing competition model.
学科主题Materials Science, Multidisciplinary
分类号Q3
语种英语
WOS记录号WOS:000855271200003
资助机构Element Strategy Initiative for Structural Materials of MEXT [JPMXP0112101000] ; JST SPRING [JPMJSP2138] ; Fundamental Research funds for the Central Universities [FRF-AT-20-09] ; LiYing Program of the Institute of Mechanics, Chinese Academy of Science [E1Z1011001] ; JSPS KAKENHI [JP18H05450, JP18H05453, JP17H01238, JP17K18827]
其他责任者Ogata, S (corresponding author), Osaka Univ, Dept Mech Sci & Bioengn, Osaka 5608531, Japan. ; Ogata, S (corresponding author), Kyoto Univ, Ctr Elements Strategy Initiat Struct Mat, Kyoto 6068501, Japan. ; Qing, P (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/90157]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China
3.Kyoto Univ, Ctr Elements Strategy Initiat Struct Mat, Kyoto 6068501, Japan
4.Osaka Univ, Dept Mech Sci & Bioengn, Osaka 5608531, Japan
推荐引用方式
GB/T 7714		 Li, Yangen,Du, Jun-Ping,Yu, Peijun,et al. Chemical ordering effect on the radiation resistance of a CoNiCrFeMn high-entropy alloy[J]. COMPUTATIONAL MATERIALS SCIENCE,2022,214:111764.
APA Li, Yangen.,Du, Jun-Ping.,Yu, Peijun.,Li, Rui.,Shinzato, Shuhei.,...&Ogata, Shigenobu.(2022).Chemical ordering effect on the radiation resistance of a CoNiCrFeMn high-entropy alloy.COMPUTATIONAL MATERIALS SCIENCE,214,111764.
MLA Li, Yangen,et al."Chemical ordering effect on the radiation resistance of a CoNiCrFeMn high-entropy alloy".COMPUTATIONAL MATERIALS SCIENCE 214(2022):111764.

入库方式： OAI收割

来源：力学研究所

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