Ultrahigh plastic flow in Au nanotubes enabled by surface stress facilitated reconstruction
文献类型：期刊论文
| 作者 | Cao, R.1; Deng, Y.2; Deng, C.3 |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2015-03-01 |
| 卷号 | 86页码:15-22 |
| 关键词 | Metal nanotubes Plastic flow Surface reconstruction Phase transformation |
| 英文摘要 | Metal nanowires are usually strong but are not able to maintain a high plastic flow due to a lack of strain hardening. In this study, we investigated the tensile deformation of a new category of metal nanowires with hollow interiors by atomistic simulations - the so-called metal nanotubes - and revealed that they possess a combination of ultrahigh strength and plastic flow. In particular, it was found that by controlling the wall thickness and axial orientation, ultrahigh plastic flow stress of more than 2 GPa could be maintained at up to similar to 60% tensile strain in Au nanotubes, whereas the solid Au nanowires of similar size yielded at tensile strain of less than 5%, after which the stress dropped immediately below 1 GPa. Furthermore, a universal trend of surface reconstruction to the energetically favorable close-packed {111} orientation was found in Au nanotubes regardless of the initial orientation, which may be responsible for the unique plasticity in Au nanotubes with extremely thin walls. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | MULTIWALLED CARBON NANOTUBES ; COHERENT-TWIN-PROPAGATION ; GOLD NANOWIRES ; TENSILE DEFORMATION ; METAL NANOSTRUCTURES ; HOLLOW INTERIORS ; COPPER NANOTUBES ; IDEAL STRENGTH ; ELASTIC STRAIN ; ARRAYS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349730900002 |
| 公开日期 | 2015-07-14 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/1513]  |
| 专题 | 武汉物理与数学研究所_磁共振应用研究部 |
| 作者单位 | 1.Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China 2.Chinese Acad Sci, Wuhan Ctr Magnet Resonance, Wuhan Inst Phys & Math,Key Lab Magnet Resonance B, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 3.Univ Manitoba, Dept Mech Engn, Winnipeg, MB R3T 5V6, Canada |
| 推荐引用方式 GB/T 7714 | Cao, R.,Deng, Y.,Deng, C.. Ultrahigh plastic flow in Au nanotubes enabled by surface stress facilitated reconstruction[J]. ACTA MATERIALIA,2015,86:15-22. |
| APA | Cao, R.,Deng, Y.,&Deng, C..(2015).Ultrahigh plastic flow in Au nanotubes enabled by surface stress facilitated reconstruction.ACTA MATERIALIA,86,15-22. |
| MLA | Cao, R.,et al."Ultrahigh plastic flow in Au nanotubes enabled by surface stress facilitated reconstruction".ACTA MATERIALIA 86(2015):15-22. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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