High He-ion irradiation resistance of CrMnFeCoNi high-entropy alloy revealed by comparison study with Ni and 304SS

doi:10.1016/j.jmst.2018.09.050

	High He-ion irradiation resistance of CrMnFeCoNi high-entropy alloy revealed by comparison study with Ni and 304SS
	Yang, Lixin 1,2; Ge, Hualong 1,2; Zhang, Jian 3; Xiong, Ting 1,2; Jin, Qianqian 1,2; Zhou, Yangtao 1,2; Shao, Xiaohong 1,2; Zhang, Bo 1,2; Zhu, Zhengwang 1,2; Zheng, Shijian 1,2
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-03
卷号	35 期号:3 页码:300-305
关键词	High entroy alloy (HEA) CrMnFeCoNi He-ion Irradiation Hardening
ISSN号	1005-0302
DOI	10.1016/j.jmst.2018.09.050
英文摘要	High entropy alloys (HEAs) have presented potential applications in nuclear power plants owing to their novel atomic structure based high irradiation resistance. However, understanding of He-ion irradiation of HEAs is still lacking. In this work, we reveal He-ion irradiation resistance of HEA CrMnFeCoNi by comparison study with a pure Ni and a 304 stainless steel (304SS). It is found that the damage structure in the three materials can be characterized with He bubbles and stacking faults/stacking fault tetrahedrons ((SFs/SFTs), which show a similar depth distribution after He-ion irradiation at both RT and 450 degrees C. Although the He bubbles have a similar size about 2 nm after irradiation at RT, the He bubble sizes of the HEA, 304SS, and Ni increase to 4.0 +/- 0.9, 5.3 +/- 1.0 and 6.7 +/- 1.0 nm after irradiation at 450 degrees C, respectively. Moreover, the density of SFs/SFTs displays in an order of Ni < 304SS < HEA at both RT and 450 degrees C. The He-ion irradiation at RT causes significant hardness enhancement for the three materials, however, compared to RT, after irradiation at 450 degrees C, the Ni presents softening, while the 304SS, especially the HEA, shows further hardening. Thus, the HEA CrMnFeCoNi possesses the smallest He bubble size, the densest SFs/SFTs, and the highest hardening, indicating the best structural stability, as well as the best He-ion irradiation resistance, which can be attributed to its low mobility of He atoms and point defects. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	Shenyang National Laboratory for Materials Science[2017RP17]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000454506800009
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32081]
专题	材料科学与工程学院材料科学与工程学院_特聘教授组
通讯作者	Zheng, Shijian; Ma, Xiuliang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Xiamen Univ, Sch Energy Res, Xiamen 361005, Peoples R China 4.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Lixin,Ge, Hualong,Zhang, Jian,et al. High He-ion irradiation resistance of CrMnFeCoNi high-entropy alloy revealed by comparison study with Ni and 304SS[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(3):300-305.
APA	Yang, Lixin.,Ge, Hualong.,Zhang, Jian.,Xiong, Ting.,Jin, Qianqian.,...&Ma, Xiuliang.(2019).High He-ion irradiation resistance of CrMnFeCoNi high-entropy alloy revealed by comparison study with Ni and 304SS.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(3),300-305.
MLA	Yang, Lixin,et al."High He-ion irradiation resistance of CrMnFeCoNi high-entropy alloy revealed by comparison study with Ni and 304SS".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.3(2019):300-305.