کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
786600 1465696 2007 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A constitutive model for the formation of martensite in austenitic steels under large strain plasticity
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A constitutive model for the formation of martensite in austenitic steels under large strain plasticity
چکیده انگلیسی

A constitutive model for diffusionless phase transitions in elastoplastic materials undergoing large deformations is developed. The model takes basic thermodynamic relations as its starting point and the phase transition is treated through an internal variable (the phase fractions) approach. The usual yield potential is used together with a transformation potential to describe the evolution of the new phase. A numerical implementation of the model is presented, along with the derivation of a consistent algorithmic tangent modulus. Simulations based on the presented model are shown to agree well with experimental findings. The proposed model provides a robust tool suitable for large-scale simulations of phase transformations in austenitic steels undergoing extensive deformations, as is demonstrated in simulations of the necking of a bar under tensile loading and also in simulations of a cup deep-drawing process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Plasticity - Volume 23, Issue 7, July 2007, Pages 1213–1239
نویسندگان
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