Atomistic simulation for deforming complex alloys with application toward TWIP steel and associated physical insights
文献类型：期刊论文
| 作者 | Wang P ; Xu SF; Liu JB; Li XY; Wei YJ(魏宇杰); Wang HT; Gao HJ; Yang W; Wang, HT; Wei YJ(魏宇杰)
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| 刊名 | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
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| 出版日期 | 2017 |
| 卷号 | 98页码:290-308 |
| 通讯作者邮箱 | htw@zju.edu.cn ; huajian_gao@brown.edu ; yangwei@nsfc.gov.cn |
| 关键词 | Molecular dynamics simulation Deformation twinning Stacking faults Dislocations |
| ISSN号 | 0022-5096 |
| 产权排序 | [Wang, Peng; Xu, Shaofeng; Wang, Hongtao; Yang, Wei] Zhejiang Univ, Inst Appl Mech, Hangzhou 310027, Zhejiang, Peoples R China; [Liu, Jiabin] Zhejiang Univ, Coll Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China; [Li, Xiaoyan] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China; [Wei, Yujie] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; [Gao, Huajian] Brown Univ, Div Engn, Providence, RI 02912 USA |
| 通讯作者 | Wang, HT ; Yang, W (reprint author), Zhejiang Univ, Inst Appl Mech, Hangzhou 310027, Zhejiang, Peoples R China. ; Gao, HJ (reprint author), Brown Univ, Div Engn, Providence, RI 02912 USA. |
| 中文摘要 | The interest in promoting deformation twinning for plasticity is mounting for advanced materials. In contrast to disordered grain boundaries, highly organized twin boundaries are beneficial to promoting strength-ductility combination. Twinning deformation typically involves the kinetics of stacking faults, its interplay with dislocations, as well as the interactions between dislocations and twin boundaries. While the latter has been intensively studied, the dynamics of stacking faults has been rarely touched upon. In this work, we report new physical insights on the stacking fault dynamics in twin induced plasticity (TWIP) steels. The atomistic simulation is made possible by a newly introduced approach: meta-atom-molecular dynamics simulation. The simulation suggests that the stacking fault interactions are dominated by dislocation reactions that take place spontaneously, different from the existing mechanisms. Whether to generate a single stacking fault, or a twinning partial and a trailing partial dislocation, depends upon a unique parameter, namely the stacking fault energy. The latter in turn determines the deformation twinning characteristics. The complex twin-slip and twin-dislocation interactions demonstrate the dual role of deformation twins as both the dislocation barrier and dislocation storage. This duality contributes to the high strength and high ductility of TWIP steels. |
| 分类号 | 一类 |
| 类目[WOS] | Materials Science, Multidisciplinary ; Mechanics ; Physics, Condensed Matter |
| 研究领域[WOS] | Materials Science ; Mechanics ; Physics |
| 关键词[WOS] | Molecular dynamics simulation ; Deformation twinning ; Stacking faults ; Dislocations |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.jmps.2016.09.008 |
| 语种 | 英语 |
| WOS记录号 | WOS:000390972900016 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59969]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Wang, HT |
| 推荐引用方式 GB/T 7714 | Wang P,Xu SF,Liu JB,et al. Atomistic simulation for deforming complex alloys with application toward TWIP steel and associated physical insights[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2017,98:290-308. |
| APA | Wang P.,Xu SF.,Liu JB.,Li XY.,魏宇杰.,...&Wei YJ.(2017).Atomistic simulation for deforming complex alloys with application toward TWIP steel and associated physical insights.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,98,290-308. |
| MLA | Wang P,et al."Atomistic simulation for deforming complex alloys with application toward TWIP steel and associated physical insights".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 98(2017):290-308. |
入库方式： OAI收割
来源：力学研究所
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