| Cold rolling of bulk nanocrystalline copper |
| L. Lu; M. L. Sui; K. Lu
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| 2001
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| 发表期刊 | Acta Materialia
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| ISSN | 1359-6454
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| 卷号 | 49期号:19页码:4127-4134 |
| 摘要 | By means of the electrodeposition technique, a bulk nanocrystalline (nc) copper sample was prepared with a high purity and a high density. The nc Cu sample was found to exhibit extreme extensibility under rolling at room temperature [Science, 287 (2000) 1463]. In this paper, the microstructure evolution of the nc Cu during the cold-rolling process was examined by means of X-ray diffraction (XRD) analysis, transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). It was found in the initial stage of cold rolling that the microstrain and grain boundary energy increase substantially, while the crystallite size remains unchanged during the whole process. When the degree of deformation exceeds 1000%, the microstrain and the.-rain boundary energy tend to saturated values, implying that this deformation process is dominated by grain boundary activity rather than lattice dislocation. This phenomenon agrees well with the observed mechanical behavior of the nc Cu sample. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved. |
| 部门归属 | chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. chinese acad sci, inst met res, rsa, state key lab rapidly solidified non equilibrium, shenyang 110015, peoples r china. chinese acad sci, inst met res, atom imaging solids lab, shenyang 110015, peoples r china.;lu, k (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;lu@imr.ac.cn
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| 关键词 | Copper
Cold Working
Deformation Mechanism
Structural Behavior
Thermal-stability
Metals
Temperature
Alloys
Nickel
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| URL | 查看原文
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| WOS记录号 | WOS:000172241100020
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/36737
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
L. Lu,M. L. Sui,K. Lu. Cold rolling of bulk nanocrystalline copper[J]. Acta Materialia,2001,49(19):4127-4134.
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| APA |
L. Lu,M. L. Sui,&K. Lu.(2001).Cold rolling of bulk nanocrystalline copper.Acta Materialia,49(19),4127-4134.
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| MLA |
L. Lu,et al."Cold rolling of bulk nanocrystalline copper".Acta Materialia 49.19(2001):4127-4134.
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