کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7879963 | 1509581 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multiscale modeling of precipitation hardening: Application to the Fe-Cr alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Precipitation hardening is investigated using dislocation dynamics (DD) simulations. Unlike classical approaches, precipitates are represented by an interaction potential, completely determined from atomistic simulations (ASs), including size and temperature effects. The transition method is first validated by comparing DD and ASs of interactions with one precipitate using the same simulation conditions and, then, applied in massive DD simulations for the prediction of hardening as a function of precipitate size, density and shear resistance over a large range of temperatures. Results show that hardening is always proportional to the Orowan hardening with an interaction coefficient depending on the effective resistance of the precipitates. A simple theoretical model is found to describe appropriately the ensemble of the reported results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 95, 15 August 2015, Pages 302-311
Journal: Acta Materialia - Volume 95, 15 August 2015, Pages 302-311
نویسندگان
Ghiath Monnet,