کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9796096 | 1514941 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simulation of the Hall-Petch effect in ultra-fine grained copper
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The evolution of the yield and flow stress in polycrystals with characteristic grain sizes ranging from 2âμ m down to 500ânm is studied by two-dimensional dislocation dynamics simulations. The results obtained are consistent with a Hall-Petch relationship. In addition, a linear relation is found between the rate of increase of the dislocation density and the inverse of the grain size. As a consequence, the size effect in this grain size range is found to be governed by the reduction in dislocation mean-free path induced by grain boundaries rather than by dislocation nucleation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 400â401, 25 July 2005, Pages 150-153
Journal: Materials Science and Engineering: A - Volumes 400â401, 25 July 2005, Pages 150-153
نویسندگان
S. Lefebvre, B. Devincre, T. Hoc,