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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. American Physical Society. DOI: 10.1103/PhysRevE.84.041143

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Abstract

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.

Item URL in elib:https://elib.dlr.de/75318/
Document Type:Article
Title:Solute trapping in rapid solidification of a binary dilute system: A phase-field study
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Galenko, Peterpeter.galenko (at) dlr.deUNSPECIFIED
Abramova, EkaterinaICAMS BochumUNSPECIFIED
Jou, DavidUniversität BarcelonaUNSPECIFIED
Danilov, DenisUdmurt Stae University, IzhevskUNSPECIFIED
Lebedev, VladimirUdmurt State University IzhevskUNSPECIFIED
Herlach, Dieterdieter.herlach (at) dlr.deUNSPECIFIED
Date:2011
Journal or Publication Title:Physical Review E
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:84
DOI :10.1103/PhysRevE.84.041143
Page Range:041143
Publisher:American Physical Society
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 (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Herlach, Dieter
Deposited On:26 Mar 2012 14:59
Last Modified:10 Jan 2019 15:49

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