Effects of minor alloying addition on He bubble formation in the irradiated FeCoNiCr-based high-entropy alloys
文献类型：期刊论文
| 作者 | Chen, Da1,5; Zhao, Shijun1,5; Sun, Jianrong2,4 ; Tai, Pengfei2,4; Sheng, Yanbin2,4; Yeli, Guma1,5; Zhao, Yilu1,5; Liu, Shaofei1,5; Lin, Weitong1,5; Kai, Wu3
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| 刊名 | JOURNAL OF NUCLEAR MATERIALS
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| 出版日期 | 2020-12-15 |
| 卷号 | 542页码:10 |
| 关键词 | High-entropy alloy Minor alloying Helium bubble Vacancy migration Phase stability |
| ISSN号 | 0022-3115 |
| DOI | 10.1016/j.jnucmat.2020.152458 |
| 通讯作者 | Zhao, Shijun(shijzhao@cityu.edu.hk) ; Sun, Jianrong(sunjr@impcas.ac.cn) ; Kai, Ji-Jung(jijkai@cityu.edu.hk) |
| 英文摘要 | Minor alloying with specific elements is an effective approach to tailor material's properties, but it has not been introduced to modify the radiation effects of high-entropy alloys (HEAs), which are a promising material for nuclear application. In the work, a 0.2 molar ratio of Al/Cu/Ti was respectively added into the quaternary FeCoNiCr HEA, they were then irradiated by 2 MeV He ions at four temperatures from 673 to 973 K. After irradiation, He bubble behavior in specimens were investigated by the transmission electron microscopy (TEM). The results showed that bubbles in the minor alloying HEAs usually had a larger size, lower number density, and broader distribution range, comparing to their parent alloy. Such effects were more significant at a higher irradiation temperature and most pronounced by the Ti-addition. Atomistic simulations revealed that such minor alloying addition could relatively reduce the energy barrier for vacancy migration and formation in FeCoNiCr system, which thereby promotes He diffusion through the replacement or vacancy mechanism. The theoretical models for He bubble formations verified our results that a higher He diffusivity in the minor alloying HEAs can enhance bubble growth and lower its nucleation numbers during irradiation. The phase stability of irradiated HEAs were also examined and its potential influences on bubble evolution were pointed out. This study provides insights on tailoring radiation defects via the conventional alloying strategy. (C) 2020 Published by Elsevier B.V. |
| WOS关键词 | 316L STAINLESS-STEEL ; HELIUM ACCUMULATION ; ION-IRRADIATION ; PHASE-STABILITY ; VOID FORMATION ; EVOLUTION ; BEHAVIOR ; NICKEL ; ENERGY ; NI |
| 资助项目 | Hong Kong Research Grant Council (RGC)[CityU 11212915] ; Hong Kong Research Grant Council (RGC)[CityU 11205018] ; Hong Kong Research Grant Council (RGC)[CityU 21200919] ; City University of Hong Kong[9610425] ; National Natural Science Foundation of China (NSFC)[91426304] ; National Natural Science Foundation of China (NSFC)[11427904] ; National Natural Science Foundation of China (NSFC)[11275005] ; National Natural Science Foundation of China (NSFC)[11975193] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515011528] ; Shenzhen Basic Research Program[JCYJ20190808181601662] |
| WOS研究方向 | Materials Science ; Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000583242500019 |
| 出版者 | ELSEVIER |
| 资助机构 | Hong Kong Research Grant Council (RGC) ; City University of Hong Kong ; National Natural Science Foundation of China (NSFC) ; Guangdong Basic and Applied Basic Research Foundation ; Shenzhen Basic Research Program |
| 源URL | [http://119.78.100.186/handle/113462/139409]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Zhao, Shijun; Sun, Jianrong; Kai, Ji-Jung |
| 作者单位 | 1.City Univ Hong Kong, Dept Mech Engn, Hong Kong, Peoples R China 2.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 3.Natl Taiwan Ocean Univ, Inst Mat Engn, Keelung 20224, Taiwan 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 710000, Peoples R China 5.City Univ Hong Kong, Ctr Adv Nucl Safety & Sustainable Dev, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Da,Zhao, Shijun,Sun, Jianrong,et al. Effects of minor alloying addition on He bubble formation in the irradiated FeCoNiCr-based high-entropy alloys[J]. JOURNAL OF NUCLEAR MATERIALS,2020,542:10. |
| APA | Chen, Da.,Zhao, Shijun.,Sun, Jianrong.,Tai, Pengfei.,Sheng, Yanbin.,...&Kai, Ji-Jung.(2020).Effects of minor alloying addition on He bubble formation in the irradiated FeCoNiCr-based high-entropy alloys.JOURNAL OF NUCLEAR MATERIALS,542,10. |
| MLA | Chen, Da,et al."Effects of minor alloying addition on He bubble formation in the irradiated FeCoNiCr-based high-entropy alloys".JOURNAL OF NUCLEAR MATERIALS 542(2020):10. |
入库方式： OAI收割
来源：近代物理研究所
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