کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1502900 993438 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scale dependence of mechanical properties of single crystals under uniform deformation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Scale dependence of mechanical properties of single crystals under uniform deformation
چکیده انگلیسی

Mechanism-based discrete dislocation plasticity is used to investigate the effect of size on micro-scale crystal plasticity under nominally uniform compression. Constitutive rules are used which include a physical representation of dislocation sources and obstacles in the undeformed samples. The simulations predict a strong size dependence of the material flow stress and reproduce the main features of recent experiments. Possible operating mechanisms are identified which highlight the interplay between sample dimensions, internal stresses and the length and time scales inherent to dislocation generation and motion.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 54, Issue 11, June 2006, Pages 1937–1941
نویسندگان
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