کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5489534 | 1524361 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analysis of γâα transformation in Fe-C-Mn ternary alloy by phase-field simulation coupled with CALPHAD database
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Analysis of γâα transformation in Fe-C-Mn ternary alloy by phase-field simulation coupled with CALPHAD database Analysis of γâα transformation in Fe-C-Mn ternary alloy by phase-field simulation coupled with CALPHAD database](/preview/png/5489534.png)
چکیده انگلیسی
We investigate the isothermal austenite-to-ferrite (γâα) transformation behaviors in a Fe-C-Mn ternary alloy simulated by the phase-field (PF) models based on the Kim-Kim-Suzuki (KKS) model and the linearized phase diagram by comparing with that predicted by the analytical model of diffusional phase transformations: the Coates model. The growth rates of the α phase during the transformation calculated by one- and two-dimensional PF simulations coupled with the CALPHAD (CALculation of PHAse Diagram) database are compared with that obtained from the Coates model. The results show that the kinetics of the γâα transformation in the Fe-0.55C-3.12Mn [at%] alloy simulated by both PF models are close to the paraequilibrium (PE) mode. The results also indicate that the growth behavior of the α phase transits from interface-controlled to diffusion-controlled growth as the mobility of the austenite/ferrite (γ/α) interface increases. Furthermore, we clarify that the growth rate of the α phase calculated by the PF model based on the KKS model is found to be in good agreement with that calculated by the Coates model under the specific condition where the γâα transformation proceeds without Mn diffusion, i.e., the PE mode, and the mobility of the γ/α interface is high.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 468, 15 June 2017, Pages 63-67
Journal: Journal of Crystal Growth - Volume 468, 15 June 2017, Pages 63-67
نویسندگان
Takahiko Kohtake, Masahito Segawa, Akinori Yamanaka,