کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1448305 988670 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling the steady state deformation stress under various deformation conditions using a single irreversible thermodynamics based formulation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Modelling the steady state deformation stress under various deformation conditions using a single irreversible thermodynamics based formulation
چکیده انگلیسی

A new unified description for the steady state deformation stress in single and polycrystalline metals and for various deformation conditions is presented. The new formulation for dislocation controlled deformation stems from the field of irreversible thermodynamics. The model applies to conditions of dynamic recovery as well as dynamic recrystallization and has been validated for constant strain rate and creep loading conditions. Unlike existing approaches, the new model captures transitions between deformation mechanisms within a single formulation. For conditions of dynamic recrystallization, the average dislocation density is found to be a function of the shear strain rate and a term combining the dislocation climb velocity and the grain boundary velocity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 57, Issue 12, July 2009, Pages 3431–3438
نویسندگان
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