| Grain size effect on deformation twinning and detwinning | |
Zhu YT; Liao XZ; Wu XL(武晓雷) ; Narayan J; Zhu, YT (reprint author), N Carolina State Univ, Dept Mat Sci & Engn, Box 7907, Raleigh, NC 27695 USA.
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| Source Publication | JOURNAL OF MATERIALS SCIENCE
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| 2013-07 | |
| Volume | 48Issue:13Pages:4467-4475 |
| ISSN | 0022-2461 |
| Abstract | This article systematically overviews the grain size effect on deformation twinning and detwinning in face-centered cubic (fcc) metals. With decreasing grain size, coarse-grained fcc metals become more difficult to deform by twinning, whereas nanocrystalline (nc) fcc metals first become easier to deform by twinning and then become more difficult, exhibiting an optimum grain size for twinning. The transition in twinning behavior from coarse-grained to nc fcc metals is caused by the change in deformation mechanisms. An analytical model based on observed deformation physics in nc metals, i.e., grain boundary emission of dislocations, provides an explanation of the observed optimum grain size for twinning in nc fcc metals. The detwinning process is caused by the interaction between dislocations and twin boundaries. Under a certain deformation condition, there exists a grain size range where the twinning process dominates over the detwinning process to produce the highest density of twins. |
| Keyword | Deformation Mechanism Deformation Twinning Detwinning Grain Size Grain Size Effect Grain Boundaries Fcc Metals Coarse-grained Nanocrystallines Optimum Grain-size Twin Boundaries |
| Subject Area | 损伤、破坏机理和微结构演化 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000317367200003 |
| Funding Organization | National Science Foundation of the United States [DMR-1104667]; Australian Research Council [DP120100510]; National Science Foundation of China [11072243, 11021262, MOST 2010CB631004] |
| Department | LNM材料介观力学性能的表征 |
| Classification | 二类/Q1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47229 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Zhu, YT (reprint author), N Carolina State Univ, Dept Mat Sci & Engn, Box 7907, Raleigh, NC 27695 USA. |
| Recommended Citation GB/T 7714 | Zhu YT,Liao XZ,Wu XL,et al. Grain size effect on deformation twinning and detwinning[J]. JOURNAL OF MATERIALS SCIENCE,2013,48,13,:4467-4475. |
| APA | Zhu YT,Liao XZ,Wu XL,Narayan J,&Zhu, YT .(2013).Grain size effect on deformation twinning and detwinning.JOURNAL OF MATERIALS SCIENCE,48(13),4467-4475. |
| MLA | Zhu YT,et al."Grain size effect on deformation twinning and detwinning".JOURNAL OF MATERIALS SCIENCE 48.13(2013):4467-4475. |
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