| Motion of 1/3 < 111 > dislocations on Sigma 3 {112} twin boundaries in nanotwinned copper |
| N. Lu; K. Du; L. Lu; H. Q. Ye
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| 2014
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| 发表期刊 | Journal of Applied Physics
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| ISSN | 0021-8979
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| 卷号 | 115期号:2 |
| 摘要 | The atomic structure of Sigma 3 {112} ITBs in nanotwinned Cu is investigated by using aberration-corrected high resolution transmission electron microscopy (HRTEM) and in situ HRTEM observations. The Sigma 3 {112} ITBs are consisted of periodically repeated three partial dislocations. The in situ HRTEM results show that 1/3[111] partial dislocation moves on the Sigma 3 {112} incoherent twin boundary (ITB), which was accompanied by a migration of the ITB. A dislocation reaction mechanism is proposed for the motion of 1/3[111] Frank partial dislocation, in which the 1/3[111] partial dislocation exchanges its position with twin boundary dislocations in sequence. In this way, the 1/3[111] dislocation can move on the incoherent twin boundary in metals with low stacking fault energy. Meanwhile, the ITB will migrate in its normal direction accordingly. These results provide insight into the reaction mechanism of 1/3[111] dislocations and ITBs and the associated migration of ITBs. (C) 2014 AIP Publishing LLC. |
| 部门归属 | [lu, n.
; du, k.
; lu, l.
; ye, h. q.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [lu, n.
; du, k.] tsinghua univ, beijing natl ctr electron microscopy, beijing 100084, peoples r china.
; lu, n (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.
; kuidu@imr.ac.cn
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| 关键词 | Centered-cubic Metals
Stacking-fault Energies
Tilt Grain-boundaries
Fcc Metals
Coherent
Dissociation
Deformation
Nucleation
Mechanism
Strength
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| URL | 查看原文
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| 语种 | 英语
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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/321006/72395
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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 |
N. Lu,K. Du,L. Lu,et al. Motion of 1/3 < 111 > dislocations on Sigma 3 {112} twin boundaries in nanotwinned copper[J]. Journal of Applied Physics,2014,115(2).
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| APA |
N. Lu,K. Du,L. Lu,&H. Q. Ye.(2014).Motion of 1/3 < 111 > dislocations on Sigma 3 {112} twin boundaries in nanotwinned copper.Journal of Applied Physics,115(2).
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| MLA |
N. Lu,et al."Motion of 1/3 < 111 > dislocations on Sigma 3 {112} twin boundaries in nanotwinned copper".Journal of Applied Physics 115.2(2014).
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