| In-situ observation of dislocation dynamics near heterostructured interfaces | |
Zhou H; Huang CX; Sha XC; Xiao LR; Ma XL; Hoeppel HW; Goeken M; Wu XL(武晓雷) ; Ameyama K; Han XD; Zhu YT
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| Corresponding Author | Han, Xiaodong([email protected]) ; Zhu, Yuntian([email protected]) |
| Source Publication | MATERIALS RESEARCH LETTERS
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| 2019 | |
| Volume | 7Issue:9Pages:376-382 |
| ISSN | 2166-3831 |
| Abstract | There has been a long-standing controversy on how dislocations interact with interfaces. Here we report in-situ observations that in a Cu-brass heterostructured TEM film Frank-Read sources are the primary dislocation sources. They were dynamically formed and deactivated throughout the deformation in grain interior, which has never been reported before. This observation indicates that strain gradient near interfaces cannot be quantitatively related to the density gradient of geometrically necessary dislocations, and it was primarily produced by Frank-Read source gradient instead of dislocation pile-ups. These findings provide new insights on how to design heterostructured interfaces to enhance mechanical properties. [GRAPHICS] |
| Keyword | Heterostructured materials deformation mechanism Frank-Read source in-situ TEM |
| DOI | 10.1080/21663831.2019.1616330 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000471551600005 |
| WOS Keyword | PLASTIC-DEFORMATION ; GRAIN ROTATION ; NANOCRYSTALLINE ; MECHANISMS ; DUCTILITY ; BOUNDARY ; STRENGTH ; SLIP |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Funding Project | National Key R&D Program of China[2017YFB0204403] ; National Natural Science Foundation of China[51601003] ; National Natural Science Foundation of China[11672195] ; Fundamental Research Funds for the Central Universities[30918011342] ; Fundamental Research Funds for the Central Universities[30919011412] ; Sichuan Youth Science and Technology Foundation[2016JQ0047] ; US Army Research Office ; Materials Characterization and Research Center of Nanjing University of Science and Technology ; Jiangsu Key Laboratory of Advanced Micro & Nano Materials and Technology |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Sichuan Youth Science and Technology Foundation ; US Army Research Office ; Materials Characterization and Research Center of Nanjing University of Science and Technology ; Jiangsu Key Laboratory of Advanced Micro & Nano Materials and Technology |
| Classification | 一类 |
| Ranking | 5+ |
| Contributor | Han, Xiaodong ; Zhu, Yuntian |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/79367 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Zhou H,Huang CX,Sha XC,et al. In-situ observation of dislocation dynamics near heterostructured interfaces[J]. MATERIALS RESEARCH LETTERS,2019,7,9,:376-382.Rp_Au:Han, Xiaodong, Zhu, Yuntian |
| APA | Zhou H.,Huang CX.,Sha XC.,Xiao LR.,Ma XL.,...&Zhu YT.(2019).In-situ observation of dislocation dynamics near heterostructured interfaces.MATERIALS RESEARCH LETTERS,7(9),376-382. |
| MLA | Zhou H,et al."In-situ observation of dislocation dynamics near heterostructured interfaces".MATERIALS RESEARCH LETTERS 7.9(2019):376-382. |
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| Jp2019241.pdf（2171KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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