Volume 1, Issue 2
On the dislocation properties of 60o partial dislocation in silver: core structure and Peierls stress

Shao-Rong Li, Shao-Feng Wang, Qun-Yi Wei & Xiao-Zhi Wu

J. At. Mol. Sci., 1 (2010), pp. 162-171.

Published online: 2010-01

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  • Abstract

Two-dimensional modified Peierls-Nabarro dislocation equation concerning the discreteness of crystals is reduced to one-dimensional equation to determined the core structure of partial dislocation in Ag. The generalized stacking fault energy along the Burgers vectors of partial dislocation is a skewed sinusoidal force law, which is related to the intrinsic stacking fault energy and the unstable stacking fault energy. A trial solution appropriate for arbitrary dislocation angle is presented within the variational method. The results show that the half core width increases as the increase of dislocation angle. Moreover, the core width decreases with the increase of the unstable stacking fault energy and the intrinsic stacking fault energy. Peierls stress for $60^{\circ}$ partial dislocation is in agreement with the experimental results.

  • Keywords

core structure partial dislocation variational method Peierls stress

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@Article{JAMS-1-162, author = {}, title = {On the dislocation properties of 60o partial dislocation in silver: core structure and Peierls stress}, journal = {Journal of Atomic and Molecular Sciences}, year = {2010}, volume = {1}, number = {2}, pages = {162--171}, abstract = {Two-dimensional modified Peierls-Nabarro dislocation equation concerning the discreteness of crystals is reduced to one-dimensional equation to determined the core structure of partial dislocation in Ag. The generalized stacking fault energy along the Burgers vectors of partial dislocation is a skewed sinusoidal force law, which is related to the intrinsic stacking fault energy and the unstable stacking fault energy. A trial solution appropriate for arbitrary dislocation angle is presented within the variational method. The results show that the half core width increases as the increase of dislocation angle. Moreover, the core width decreases with the increase of the unstable stacking fault energy and the intrinsic stacking fault energy. Peierls stress for $60^{\circ}$ partial dislocation is in agreement with the experimental results.}, issn = {2079-7346}, doi = {https://doi.org/10.4208/jams.110709.112809a}, url = {http://global-sci.org/intro/article_detail/jams/8077.html} }
TY - JOUR T1 - On the dislocation properties of 60o partial dislocation in silver: core structure and Peierls stress JO - Journal of Atomic and Molecular Sciences VL - 2 SP - 162 EP - 171 PY - 2010 DA - 2010/01 SN - 1 DO - http://dor.org/10.4208/jams.110709.112809a UR - https://global-sci.org/intro/jams/8077.html KW - core structure KW - partial dislocation KW - variational method KW - Peierls stress AB - Two-dimensional modified Peierls-Nabarro dislocation equation concerning the discreteness of crystals is reduced to one-dimensional equation to determined the core structure of partial dislocation in Ag. The generalized stacking fault energy along the Burgers vectors of partial dislocation is a skewed sinusoidal force law, which is related to the intrinsic stacking fault energy and the unstable stacking fault energy. A trial solution appropriate for arbitrary dislocation angle is presented within the variational method. The results show that the half core width increases as the increase of dislocation angle. Moreover, the core width decreases with the increase of the unstable stacking fault energy and the intrinsic stacking fault energy. Peierls stress for $60^{\circ}$ partial dislocation is in agreement with the experimental results.
Shao-Rong Li, Shao-Feng Wang, Qun-Yi Wei & Xiao-Zhi Wu. (2019). On the dislocation properties of 60o partial dislocation in silver: core structure and Peierls stress. Journal of Atomic and Molecular Sciences. 1 (2). 162-171. doi:10.4208/jams.110709.112809a
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