کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1500717 993356 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of stacking fault energy on deformation mechanism and dislocation storage capacity in ultrafine-grained materials
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Influence of stacking fault energy on deformation mechanism and dislocation storage capacity in ultrafine-grained materials
چکیده انگلیسی

 Partial dislocation emission from grain boundaries in metals with medium-to-high stacking fault energies is observed primarily in the grain size range of a few tens of nanometers. Here we report that a reduction in the stacking fault energy permits the emission of partial dislocations from grain boundaries in ultrafine-grained materials with grain sizes significantly larger than 100 nm and this produces twinning. Such twins are effective in increasing the dislocation storage capacity, which may be used to improve the ductility.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 60, Issue 1, January 2009, Pages 52–55
نویسندگان
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