کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1501171 | 993373 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Competing processes in reactions between an edge dislocation and dislocation loops in a body-centred cubic metal
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Competing processes in reactions between an edge dislocation and dislocation loops in a body-centred cubic metal Competing processes in reactions between an edge dislocation and dislocation loops in a body-centred cubic metal](/preview/png/1501171.png)
چکیده انگلیسی
Molecular dynamics simulation was used to investigate reactions of a 12〈111〉{110} edge dislocation with interstitial dislocation loops of 12〈111〉 and 〈1 0 0〉 type in a model of iron. Whether loops are strong or weak obstacles depends not only on loop size and type, but also on temperature and dislocation velocity. These parameters determine whether a loop is absorbed on the dislocation or left behind as it glides away. Absorption requires glide of a reaction segment over the loop surface and cross-slip of dipole dislocation arms attached to the ends of the segment: these mechanisms depend on temperature and strain rate, as discussed here.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 62, Issue 9, May 2010, Pages 697–700
Journal: Scripta Materialia - Volume 62, Issue 9, May 2010, Pages 697–700
نویسندگان
D. Terentyev, Yu.N. Osetsky, D.J. Bacon,