Deformation-mechanism dependent stretchability of nanocrystalline gold films on flexible substrates
文献类型：期刊论文
| 作者 | Luo, Xue-Mei; Zhang, Guang-Ping; Zhang, GP (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China. |
| 刊名 | CAMBRIDGE UNIV PRESS
 |
| 出版日期 | 2017-09-28 |
| 卷号 | 32期号:18页码:3516-3523 |
| ISSN号 | 0884-2914 |
| 英文摘要 | Stretchability of polyimide-supported nanocrystalline Au films with a thickness ranging from 930 to 20 nm was evaluated by uniaxial tensile testing. The results show that the fracture strain gradually decreased with decreasing the film thickness. Such degraded stretchability depends on plastic deformation mechanisms associated with the length scales. As the film thickness is larger than 90 nm, local thinning in the grown grains contributed to the high stretchability. Full dislocation behaviors including dislocation pileup in the 930 nm-thick film, the activation of Frank-Read dislocation source in the 170 nm-thick film and the grain boundary dislocation source in the 90 nm-thick film were dominated plastic deformation. As the film thickness is less than 40 nm, low stretchability of thin films resulted from intergranular fracture, and partial dislocation behaviors became prevailed. Evident grain growth happened in the films studied except for the 20 nm-thick film, which is expected to be involved in the stretchability of the nanocrystalline metal films on flexible substrates.; Stretchability of polyimide-supported nanocrystalline Au films with a thickness ranging from 930 to 20 nm was evaluated by uniaxial tensile testing. The results show that the fracture strain gradually decreased with decreasing the film thickness. Such degraded stretchability depends on plastic deformation mechanisms associated with the length scales. As the film thickness is larger than 90 nm, local thinning in the grown grains contributed to the high stretchability. Full dislocation behaviors including dislocation pileup in the 930 nm-thick film, the activation of Frank-Read dislocation source in the 170 nm-thick film and the grain boundary dislocation source in the 90 nm-thick film were dominated plastic deformation. As the film thickness is less than 40 nm, low stretchability of thin films resulted from intergranular fracture, and partial dislocation behaviors became prevailed. Evident grain growth happened in the films studied except for the 20 nm-thick film, which is expected to be involved in the stretchability of the nanocrystalline metal films on flexible substrates. |
| 学科主题 | Materials Science, Multidisciplinary |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China (NSFC) [51601198, 51571199]; NSFC [51371180] |
| 公开日期 | 2018-01-10 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79083]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, GP (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Luo, Xue-Mei,Zhang, Guang-Ping,Zhang, GP . Deformation-mechanism dependent stretchability of nanocrystalline gold films on flexible substrates[J]. CAMBRIDGE UNIV PRESS,2017,32(18):3516-3523. |
| APA | Luo, Xue-Mei,Zhang, Guang-Ping,&Zhang, GP .(2017).Deformation-mechanism dependent stretchability of nanocrystalline gold films on flexible substrates.CAMBRIDGE UNIV PRESS,32(18),3516-3523. |
| MLA | Luo, Xue-Mei,et al."Deformation-mechanism dependent stretchability of nanocrystalline gold films on flexible substrates".CAMBRIDGE UNIV PRESS 32.18(2017):3516-3523. |
入库方式： OAI收割
来源：金属研究所
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