کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1575297 | 1514742 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancing dislocation emission in nanocrystalline materials through shear-coupled migration of grain boundaries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhancing dislocation emission in nanocrystalline materials through shear-coupled migration of grain boundaries Enhancing dislocation emission in nanocrystalline materials through shear-coupled migration of grain boundaries](/preview/png/1575297.png)
چکیده انگلیسی
A theoretical model has been developed to illustrate the effect of shear-coupled migration of grain boundaries on dislocation emission in nanocrystalline materials. The energy characteristics and critical shear stress τcτc that is required to initiate the emission process were determined. The results obtained show that the dislocation emission can be considerably enhanced as shear-coupled migration was the dominating process; a critical coupling factor that corresponded to the minimum τcτc, which led to an optimal dislocation emission, was also discovered. The proposed model has also been quantitatively validated by the existing molecular dynamics simulations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 601, 17 April 2014, Pages 153–158
Journal: Materials Science and Engineering: A - Volume 601, 17 April 2014, Pages 153–158
نویسندگان
Jianjun Li, A.K. Soh, Xiaolei Wu,