کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10634076 993331 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In situ TEM observations of room temperature dislocation climb at interfaces in nanolayered Al/Nb composites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
In situ TEM observations of room temperature dislocation climb at interfaces in nanolayered Al/Nb composites
چکیده انگلیسی
Using in situ nanoindentation, we investigated dislocation-interface interactions in Al/Nb multilayers. Preferential storage of dislocations at interfaces, as opposed to within layers, was observed. Recovery of dislocations was observed to occur through climb in the interfaces. The rapid climb of dislocations is ascribed to high vacancy diffusivity and vacancy concentration in the interfaces. The vacancy formation energy at interfaces, 0.12 eV, as estimated from the experimentally measured climb rates, was found to be significantly lower than in the bulk.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 63, Issue 4, August 2010, Pages 363-366
نویسندگان
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