کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1502314 1510934 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Size dependence of rate-controlling deformation mechanisms in nanotwinned copper
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Size dependence of rate-controlling deformation mechanisms in nanotwinned copper
چکیده انگلیسی

Nanotwinned metals exhibit an unusual combination of ultrahigh strength, considerable ductility and enhanced rate sensitivity. We find that a Hall–Petch-type relationship closely fits the experiment data of activation volume as a function of twin spacing. The results suggest a transition of the rate-controlling mechanism from intra-twin- to twin-boundary-mediated processes with decreasing twin lamellar thickness. These findings provide insights into the possible routes for optimizing the strength and ductility of nanostructured metals by tailoring internal interfaces.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 60, Issue 12, June 2009, Pages 1062–1066
نویسندگان
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