کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1499494 993309 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Continuum modeling of dislocation starvation and subsequent nucleation in nano-pillar compressions
چکیده انگلیسی

The mechanical behavior of single crystalline aluminum nano-pillars under uniaxial compression differs from bulk Al in that the former is characterized by a smoother transition from elasticity to plasticity. We propose an extension of the phenomenological model of dislocation starvation originally proposed in [Greer and Nix, Phys. Rev. B 73 (2006) 245410] additionally accounting for dislocation nucleation. The calibrated and validated continuum model successfully captures the intrinsic mechanisms leading to the transition from dislocation starvation to dislocation nucleation in fcc nano-pillars.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 66, Issue 2, January 2012, Pages 93–96
نویسندگان
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