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Revealing Extraordinary Intrinsic Tensile Plasticity in Gradient Nano-Grained Copper
文献类型：期刊论文
| 作者 | T. H. Fang ; W. L. Li ; N. R. Tao ; K. Lu |
| 刊名 | Science
 |
| 出版日期 | 2011 |
| 卷号 | 331期号:6024页码:1587-1590 |
| 关键词 | nanostructured surface-layer room-temperature nanocrystalline materials boundary motion deformation growth metal films cu ductility |
| ISSN号 | 0036-8075 |
| 中文摘要 | Nano-grained (NG) metals are believed to be strong but intrinsically brittle: Free-standing NG metals usually exhibit a tensile uniform elongation of a few percent. When a NG copper film is confined by a coarse-grained (CG) copper substrate with a gradient grain-size transition, tensile plasticity can be achieved in the NG film where strain localization is suppressed. The gradient NG film exhibits a 10 times higher yield strength and a tensile plasticity comparable to that of the CG substrate and can sustain a tensile true strain exceeding 100% without cracking. A mechanically driven grain boundary migration process with a substantial concomitant grain growth dominates plastic deformation of the gradient NG structure. The extraordinary intrinsic plasticity of gradient NG structures offers their potential for use as advanced coatings of bulk materials. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30314]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | T. H. Fang,W. L. Li,N. R. Tao,et al. Revealing Extraordinary Intrinsic Tensile Plasticity in Gradient Nano-Grained Copper[J]. Science,2011,331(6024):1587-1590. |
| APA | T. H. Fang,W. L. Li,N. R. Tao,&K. Lu.(2011).Revealing Extraordinary Intrinsic Tensile Plasticity in Gradient Nano-Grained Copper.Science,331(6024),1587-1590. |
| MLA | T. H. Fang,et al."Revealing Extraordinary Intrinsic Tensile Plasticity in Gradient Nano-Grained Copper".Science 331.6024(2011):1587-1590. |
入库方式： OAI收割
来源：金属研究所
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