| 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 Author | Luo, Z. P.(zpluo@imr.ac.cn) |
| 2022-06-01 | |
| Source Publication | SCRIPTA MATERIALIA
 |
| ISSN | 1359-6462 |
| Volume | 214Pages:6 |
| Abstract | 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. |
| Keyword | Nanograined metals Grain boundary migration High pressure Deformation mechanism Partial dislocation |
| Funding Organization | Ministry of Sci-ence & Technology of China ; National Science Foundation of China ; Liaoning Revitalization Talents Program |
| DOI | 10.1016/j.scriptamat.2022.114656 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000791254600002 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173936 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Luo, Z. P. |
| Affiliation | 1.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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