کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9796109 1514941 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spatio-temporal features of the Portevin-Le Chatelier effect
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Spatio-temporal features of the Portevin-Le Chatelier effect
چکیده انگلیسی
We show that an extension of Ananthakrishna's (AK) model exhibits all the features of the Portevin-Le Chatelier (PLC) effect including the recently observed crossover from a low dimensional chaotic state at low and medium strain rates to a high dimensional power law state of stress drops at high strain rates. The model also displays three types of bands. The dislocation configurations are shown to be in the pinned stated in the chaotic regime (i.e., the region of type C and B bands) and at the edge of unpinning in the power law regime where propagating bands are seen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 400–401, 25 July 2005, Pages 210-213
نویسندگان
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