کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11016551 | 1775143 | 2018 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A thermodynamically consistent model for elastoplasticity, recovery, recrystallization and grain coarsening
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
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چکیده انگلیسی
We present a model for the thermomechanical behaviour and microstructure evolution of metallic materials during thermomechanical processing. Special emphasis is put on its derivation based on the Müller-Liu procedure which ensures consistency with fundamental physical principles. The model represents in principle the strong coupling between elastoplastic deformation, recovery, recrystallization, grain coarsening and related thermal effects. Furthermore, it takes the dragging effect of precipitates on grain boundaries and dislocations into account by which a higher strength can be achieved and the grain size is stabilised. For the microstructure description, we use a mean-field approach. In several numerical examples, we demonstrate the capability of the model to consistently predict the interplay between elastoplastic deformation, microstructure evolution, dynamic hardening and softening and the related temperature change.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volumes 152â153, November 2018, Pages 185-195
Journal: International Journal of Solids and Structures - Volumes 152â153, November 2018, Pages 185-195
نویسندگان
Lukas Kertsch, Dirk Helm,