A new treatment of alloying effects on migrating interfaces in Fe-X alloys

The steady-state assumption in the classical solute drag (SD) models is not always valid in treating the complex interaction between alloying elements and migrating interfaces (grain/phase boundaries) in steels. In this study, a general treatment based on phase-field theory is proposed to capture th...

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Bibliographic Details
Published in:Scripta materialia 2019-03, Vol.162, p.44-48
Main Authors: Zhang, Cong-Yu, Chen, Hao, Zhu, Jia-Ning, Liu, Wen-Bo, Liu, Geng, Zhang, Chi, Yang, Zhi-Gang
Format: Article
Language:English
Subjects:
Diffusion
Phase transformations
Solute drag
Steels
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Summary:The steady-state assumption in the classical solute drag (SD) models is not always valid in treating the complex interaction between alloying elements and migrating interfaces (grain/phase boundaries) in steels. In this study, a general treatment based on phase-field theory is proposed to capture the SD effects of alloying elements without the steady state assumption, while it reduces to the SD models under steady-state assumption. This new treatment can predict the interaction between migrating interfaces and alloying elements with strong segregation tendencies, which cannot be captured by the classical SD models. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2018.10.034