کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1583251 | 1514883 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deformation-induced non-equilibrium grain boundary segregation in dilute alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
On the basis of the vacancy-solute complex mechanism, a model describing deformation-induced non-equilibrium grain boundary segregation of solute is established for dilute alloys, which includes the quasi-thermodynamics and kinetics. The model is applied to the evaluation of non-equilibrium grain boundary segregation of boron during high temperature plastic deformation in an austenitic steel microstructure. The deformation-induced non-equilibrium segregation increases with decreasing temperature and is considerably larger than the thermal equilibrium one, especially in the temperature range below â¼750 °C. In addition, at a given temperature the non-equilibrium segregation augments with rising strain rate as the deformation-created supersaturated vacancy concentration increases. The predictions are generally consistent with some experimental observations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 473, Issues 1â2, 25 January 2008, Pages 226-232
Journal: Materials Science and Engineering: A - Volume 473, Issues 1â2, 25 January 2008, Pages 226-232
نویسندگان
S.-H. Song, Q. Zhang, L.-Q. Weng,