中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 近代物理研究所
  3. 中国科学院近代物理研究所
Diffusion controlled helium bubble formation resistance of FeCoNiCr high-entropy alloy in the half-melting temperature regime

文献类型：期刊论文

作者Chen, Da1; Zhao, Shijun1,2; Sun, Jianrong3,4; Tai, Pengfei3,4; Sheng, Yanbin3,4; Zhao, Yilu2; Yeli, Guma2; Lin, Weitong1; Liu, Shaofei1; Kai, Wu5
刊名JOURNAL OF NUCLEAR MATERIALS
出版日期2019-12-01
卷号526页码:7
关键词High-entropy alloy Helium bubbles Point defects behavior Vacancy concentration Helium diffusion
ISSN号0022-3115
DOI10.1016/j.jnucmat.2019.151747
通讯作者Sun, Jianrong(sunjr@impcas.ac.cn) ; Kai, Ji-Jung(jijkai@cityu.edu.hk)
英文摘要For the structure materials applied in advanced nuclear energy system, helium bubble formation is always a big concern which will severely degrade the performance of materials around or above the half-melting temperature regime (similar to 0.5 T-m). To explore the He bubble formation resistance in the FeCoNiCr alloy, that is a novel face-centered cubic (fcc) high-entropy alloy (HEA) showing excellent radiation damage tolerance, we conducted a series of 2 MeV He ions irradiation experiments on them at three different temperatures (0.46, 0.51 and 0.57 T-m). For reference purpose, a model fcc metallic system of pure Ni was irradiated simultaneously. Through transmission electron microscopy (TEM), He bubble formation in the irradiated samples was systematically investigated. The results show that in any designated temperature, He bubbles have a smaller size, higher number density, and denser distribution in the HEA when comparing to that of pure Ni. The volume fraction of He bubbles is also less in the HEA, suggesting a suppressed bubble evolution. For the underlying mechanism of the He bubble formation resistance of HEA, we suggest that the featured energy barriers for point defects migration in the HEA will promote the recombination of defects and somewhat reduce the vacancy concentration during irradiation. Such unique effect could suppress the He diffusion through vacancy mechanism, it will finally influence the evolution of He bubbles in the HEA. (C) 2019 Published by Elsevier B.V.
WOS关键词316L STAINLESS-STEEL ; PHASE-STABILITY ; HE BEHAVIOR ; IRRADIATION ; METALS ; ACCUMULATION ; CHALLENGES ; NICKEL ; NI
资助项目Hong Kong Research Grant Council (RGC)[CityU 11212915] ; Hong Kong Research Grant Council (RGC)[CityU 11205018] ; City University of Hong Kong[CityU 9610425] ; National Natural Science Foundation of China (NSFC)[11427904] ; National Natural Science Foundation of China (NSFC)[11275005]
WOS研究方向Materials Science ; Nuclear Science & Technology
语种英语
WOS记录号WOS:000500777900006
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)
源URL[http://119.78.100.186/handle/113462/141238]  
专题中国科学院近代物理研究所
通讯作者Sun, Jianrong; Kai, Ji-Jung
作者单位1.City Univ Hong Kong, Dept Mech Engn, Hong Kong, Peoples R China
2.City Univ Hong Kong, Ctr Adv Nucl Safety & Sustainable Dev, Hong Kong, Peoples R China
3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 710000, Gansu, Peoples R China
4.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
5.Natl Taiwan Ocean Univ, Inst Mat Engn, Keelung 20224, Taiwan
推荐引用方式
GB/T 7714		 Chen, Da,Zhao, Shijun,Sun, Jianrong,et al. Diffusion controlled helium bubble formation resistance of FeCoNiCr high-entropy alloy in the half-melting temperature regime[J]. JOURNAL OF NUCLEAR MATERIALS,2019,526:7.
APA Chen, Da.,Zhao, Shijun.,Sun, Jianrong.,Tai, Pengfei.,Sheng, Yanbin.,...&Kai, Ji-Jung.(2019).Diffusion controlled helium bubble formation resistance of FeCoNiCr high-entropy alloy in the half-melting temperature regime.JOURNAL OF NUCLEAR MATERIALS,526,7.
MLA Chen, Da,et al."Diffusion controlled helium bubble formation resistance of FeCoNiCr high-entropy alloy in the half-melting temperature regime".JOURNAL OF NUCLEAR MATERIALS 526(2019):7.

入库方式： OAI收割

来源：近代物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。