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High pressure suppressing grain boundary migration in a nanograined nickel
Guo, X. K.1,2; Dong, H. L.3; Luo, Z. P.1; Chen, Bin3; Li, X. Y.1
Corresponding AuthorLuo, Z. P.(zpluo@imr.ac.cn)
2022-06-01
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume214Pages:6
AbstractGrain 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.
KeywordNanograined metals Grain boundary migration High pressure Deformation mechanism Partial dislocation
Funding OrganizationMinistry of Sci-ence & Technology of China ; National Science Foundation of China ; Liaoning Revitalization Talents Program
DOI10.1016/j.scriptamat.2022.114656
Indexed BySCI
Language英语
Funding ProjectMinistry 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 Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000791254600002
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173936
Collection中国科学院金属研究所
Corresponding AuthorLuo, Z. P.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
3.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China
Recommended Citation
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.
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