کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
801271 904162 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dislocation–interface interaction in nanoscale fcc metallic bilayers
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Dislocation–interface interaction in nanoscale fcc metallic bilayers
چکیده انگلیسی

Dislocation–interface interactions are investigated in a Ni–Cu bilayer using molecular mechanics simulations. Nanoindentation model is used to generate dislocations in the top Ni layer and study their propagation through coherent (1 1 1) fcc interface into Cu. Although dislocations do propagate through, the interface acts as a strong barrier to gliding dislocations and contributes considerably to the overall strain hardening of the nanolayered material. Mechanisms of dislocation–interface interactions are analyzed. In particular, spreading of a dissociated dislocation core at the interface and interfacial stacking fault formation are investigated along with their effect on the material strengthening.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics Research Communications - Volume 37, Issue 3, April 2010, Pages 315–319
نویسندگان
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