High pressure suppressing grain boundary migration in a nanograined nickel

doi:10.1016/j.scriptamat.2022.114656

CORC > 金属研究所 > 中国科学院金属研究所

	High pressure suppressing grain boundary migration in a nanograined nickel
	Guo, X. K.2,3; Dong, H. L.1; Luo, Z. P.3; Chen, Bin 1; Li, X. Y.3
刊名	SCRIPTA MATERIALIA
	2022-06-01
卷号	214 页码:6
关键词	Nanograined metals Grain boundary migration High pressure Deformation mechanism Partial dislocation
ISSN号	1359-6462
DOI	10.1016/j.scriptamat.2022.114656
通讯作者	Luo, Z. P.(zpluo@imr.ac.cn)
英文摘要	Grain boundaries (GBs) of nanograined metals are prone to migrate when subjected to mechanical loading. In this study, nanograined pure nickel samples with an average grain size of about 70 nm were deformed under pressure of 20 GPa and 43 GPa using a diamond anvil cell. It was found that the average grain size decreased slightly after high pressure compression, which meant high pressure suppressed the nanograin boundaries migration. Extensive extended dislocations with large dissociation width (averagely 5-6 nm) as well as LomerCottrell locks were observed in the high pressure deformed nanograined Ni, indicating that partial dislocation activities dominated the plastic deformation, which may facilitate to relax GBs and thus suppress GBs migration. The finding of this study may help to fabricate stable nanocrystalline metals.
资助项目	Ministry of Sci-ence & Technology of China[2017YFA0700700] ; Ministry of Sci-ence & Technology of China[2017YFA0204401] ; National Science Foundation of China[51701216] ; Liaoning Revitalization Talents Program[XLYC1808008]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000791254600002
资助机构	Ministry of Sci-ence & Technology of China ; National Science Foundation of China ; Liaoning Revitalization Talents Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173935]
专题	金属研究所_中国科学院金属研究所
通讯作者	Luo, Z. P.
作者单位	1.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Guo, X. K.,Dong, H. L.,Luo, Z. P.,et al. High pressure suppressing grain boundary migration in a nanograined nickel[J]. SCRIPTA MATERIALIA,2022,214:6.
APA	Guo, X. K.,Dong, H. L.,Luo, Z. P.,Chen, Bin,&Li, X. Y..(2022).High pressure suppressing grain boundary migration in a nanograined nickel.SCRIPTA MATERIALIA,214,6.
MLA	Guo, X. K.,et al."High pressure suppressing grain boundary migration in a nanograined nickel".SCRIPTA MATERIALIA 214(2022):6.