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Phase-field study of solute trapping effect in rapid solidification

Galenko, Peter and Abramova, Ekaterina and Herlach, Dieter (2011) Phase-field study of solute trapping effect in rapid solidification. Discrete and Contiuous Dynamical Systems, pp. 457-466.

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Official URL: http://www.aimSciences.org

Abstract

The phase-field model of Echebarria, Folch, Karma, and Plapp [Phys. Rev. E 70 (2004) 061604] is extended to the case of rapid solidification in which local non-equilibrium phenomena occur in the bulk phases and within the diffuse solid-liquid interface. Such an extension leads to the fully hyperbolic system of equations given by the atomic diffusion equation and the phase-field equation of motion. This model is applied to the problem of solute trapping, which is accompanied by the entrapment of solute atoms beyond chemical equilibrium by a rapidly moving interface. The model predicts the beginning of complete solute trapping and diffusionless solidification at a finite solidification velocity.

Document Type:Article
Title:Phase-field study of solute trapping effect in rapid solidification
Authors:
AuthorsInstitution or Email of Authors
Galenko, Peterpeter.galenko@dlr.de
Abramova, Ekaterinaekaterina.abramova@rub.de
Herlach, Dieterdieter.herlach@dlr.de
Date:2011
Journal or Publication Title:Discrete and Contiuous Dynamical Systems
Refereed publication:Yes
In Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 457-466
Status:Published
Keywords:Unterkühlung von Materialien
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Materialwissenschaftliche Forschung
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Dieter Herlach
Deposited On:26 Mar 2012 14:58
Last Modified:26 Mar 2012 14:58

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