| Mechanics of gradient nanostructured metals | |
| Zhang, Yin1; Cheng, Zhao2; Zhu, Ting3; Lu, Lei2 | |
| 通讯作者 | Zhu, Ting(ting.zhu@me.gatech.edu) ; Lu, Lei(llu@imr.ac.cn) |
| 2024-08-01 | |
| 发表期刊 | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
 |
| ISSN | 0022-5096 |
| 卷号 | 189页码:18 |
| 摘要 | The emergence of heterogeneous nanostructured materials (HNMs) offers exciting opportunities to achieve outstanding mechanical properties. Among these materials, gradient nanotwinned (GNT) Cu is a prominent class of HNMs, demonstrating superior strengths by gaining extra strengths compared to non-gradient counterparts. Its layered gradient structure provides a simplified quasi-one-dimensional model system for understanding the extra strengthening effects of structural gradients and resulting plastic strain gradients. This paper presents a comprehensive report for recent experimental and modeling studies on the mechanics of GNT Cu, covering advances in controlled material processing, back stress measurement, deformation field characterization, dislocation microstructure analysis, and strain gradient plasticity modeling. These studies unveil the spatiotemporal evolution of both plastic strain gradients and extra back stresses originating from structural gradients. Direct connections are established between the sample-level extra strength of GNT Cu and the synergistic strengthening effects induced by local nanotwin structures and their gradients. We emphasize the critical role of the size of the representative volume element in assessing the effects of plastic strain gradient and extra back stress. Moreover, lower-order strain gradient plasticity models are validated through experimental characterizations of GNT Cu, paving the way for future investigation into the mechanics of gradient nanostructured metals. Finally, we provide an outlook on research needs for understanding the mechanics of gradient nanostructured metals and, more broadly, HNMs, towards achieving exceptional mechanical properties. |
| 关键词 | Gradient nanotwinned Cu Strain gradient plasticity modeling Representative volume element Extra strength Back stress |
| 资助者 | National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; NSFC ; Youth Innovation Promotion Association, CAS |
| DOI | 10.1016/j.jmps.2024.105719 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China (NSFC)[51931010] ; National Natural Science Foundation of China (NSFC)[92163202] ; Chinese Academy of Sciences (CAS) ; NSFC[52371124] ; NSFC[52001312] ; Youth Innovation Promotion Association, CAS |
| WOS研究方向 | Materials Science ; Mechanics ; Physics |
| WOS类目 | Materials Science, Multidisciplinary ; Mechanics ; Physics, Condensed Matter |
| WOS记录号 | WOS:001251154000001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/187202 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Zhu, Ting; Lu, Lei |
| 作者单位 | 1.Peking Univ, Dept Mech & Engn Sci, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Georgia Inst Technol, Woodruff Sch Mech Engn, Atlanta, GA 30332 USA |
| 推荐引用方式 GB/T 7714 | Zhang, Yin,Cheng, Zhao,Zhu, Ting,et al. Mechanics of gradient nanostructured metals[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2024,189:18. |
| APA | Zhang, Yin,Cheng, Zhao,Zhu, Ting,&Lu, Lei.(2024).Mechanics of gradient nanostructured metals.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,189,18. |
| MLA | Zhang, Yin,et al."Mechanics of gradient nanostructured metals".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 189(2024):18. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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