کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1564424 999648 2007 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterizing DP-steels using micromechanical modeling of cells
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Characterizing DP-steels using micromechanical modeling of cells
چکیده انگلیسی
Dual phase (DP) steels having a microstructure consisting of martensite dispersed in a softer matrix called ferrite have received colossal attention due to their appealing combination of high strength, high work hardening rate and good ductility, which are favorable properties especially for forming processes. A model based on micromechanical modeling of cells is developed to capture the mechanical behavior of the DP-steels. The single-phase material behaviors of the constituents, which are the only material description required in micromechanical modeling, are produced in this work. Different material considerations, which are shown to have significant influence on the material behavior, are employed in the model. These include ferrite grain size, martensite softening by carbon dilution and particle size distribution effects. DP-steels of different volume fractions of martensite are produced in this work from heat treatment of a low carbon steel. Results of tensile tests are compared to the model predictions, which show good agreement between the experiment and model in terms of stress strain trends, in general, and specifically the UTS and the uniform strain and in terms of the mechanics and mechanisms of deformation, which takes place in DP-steels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 39, Issue 2, April 2007, Pages 402-415
نویسندگان
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