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Solute trapping in rapid solidification of a binary dilute system: A phase-field study

Galenko, Peter and Abramova, Ekaterina and Jou, David and Danilov, Denis and Lebedev, Vladimir and Herlach, Dieter (2011) Solute trapping in rapid solidification of a binary dilute system: A phase-field study. Physical Review E, 84, 041143. DOI: 10.1103/PhysRevE.84.041143.

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The phase-field model of Echebarria, Folch, Karma, and Plapp [Phys. Rev. E 70, 061604 (2004)] is extended to the case of rapid solidification in which local nonequilibrium 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 equal to the diffusion speed in bulk liquid.

Document Type:Article
Title:Solute trapping in rapid solidification of a binary dilute system: A phase-field study
AuthorsInstitution or Email of Authors
Galenko, Peterpeter.galenko@dlr.de
Abramova, EkaterinaICAMS Bochum
Jou, DavidUniversität Barcelona
Danilov, DenisUdmurt Stae University, Izhevsk
Lebedev, VladimirUdmurt State University Izhevsk
Herlach, Dieterdieter.herlach@dlr.de
Journal or Publication Title:Physical Review E
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:No
Page Range:041143
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 14:59
Last Modified:16 Feb 2016 05:04

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