کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5356589 1503611 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Grain size effect on indentation of nanocrystalline copper
ترجمه فارسی عنوان
اثر دانه بر روی انداختن مس نانوکریستالیک
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
The nanoindentation process of single-crystal and nanocrystalline copper is studied with molecular dynamics simulations based on the many-body tight-binding potential. The grain size effect is evaluated in terms of slip vector, atomic stress, loading force, and hardness. The inverse Hall-Petch relation is found below 7 nm. With grain size smaller than 5 nm, the equivalent stress decreases quickly and stress-induced grain growth is observed in indentation process. Grain rotation is the main cause of grain coarsening for small grain sizes. For larger grain sizes, dislocations are found at the {1 1 1} close-packed plane and {1 0 0} plane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 353, 30 October 2015, Pages 494-498
نویسندگان
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