Phase-field-crystal study of solute trapping.
Phys Rev E Stat Nonlin Soft Matter Phys
; 87(2): 022404, 2013 Feb.
Article
de En
| MEDLINE
| ID: mdl-23496523
ABSTRACT
In this study we have incorporated two time scales into the phase-field-crystal model of a binary alloy to explore different solute trapping properties as a function of crystal-melt interface velocity. With only diffusive dynamics, we demonstrate that the segregation coefficient, K as a function of velocity for a binary alloy is consistent with the model of Kaplan and Aziz where K approaches unity in the limit of infinite velocity. However, with the introduction of wavelike dynamics in both the density and concentration fields, the trapping follows the kinetics proposed by Sobolev [Phys. Lett. A 199, 383 (1995)], where complete trapping occurs at a finite velocity.
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Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Solutions
/
Modèles moléculaires
/
Cristallisation
/
Alliages
/
Modèles chimiques
Langue:
En
Journal:
Phys Rev E Stat Nonlin Soft Matter Phys
Sujet du journal:
BIOFISICA
/
FISIOLOGIA
Année:
2013
Type de document:
Article