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

doi:10.1016/j.commatsci.2022.111764

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	Chemical ordering effect on the radiation resistance of a CoNiCrFeMn high-entropy alloy
	Li, Yangen ; Du, Jun-Ping ; Yu, Peijun ; Li, Rui 2; Shinzato, Shuhei ; Peng Q(彭庆); Ogata, Shigenobu 1
发表期刊	COMPUTATIONAL MATERIALS SCIENCE
	2022-11
卷号	214 页码:111764
ISSN	0927-0256
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.
关键词	High-entropy alloy Radiation resistance Chemical short-range order Defects
学科领域	Materials Science, Multidisciplinary
DOI	10.1016/j.commatsci.2022.111764
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000855271200003
项目资助者	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]
论文分区	Q3
力学所作者排名	1
RpAuthor	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.
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/90157
专题	非线性力学国家重点实验室
作者单位	1.Osaka Univ, Dept Mech Sci & Bioengn, Osaka 5608531, Japan 2.Kyoto Univ, Ctr Elements Strategy Initiat Struct Mat, Kyoto 6068501, Japan 3.Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
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.

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