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Comparative analysis of models for solute trapping in rapid solidification

Abramova, Ekaterina and Danilov, Denis and Galenko, Peter and Herlach, Dieter M. and Lebedev, Vladimir (2010) Comparative analysis of models for solute trapping in rapid solidification. In: DPG Verhandlungen 2010, Condensed Matter Section, p. 510. DPG Spring Meeting, Condensed Matter Section, 21. - 26. März 2010, Regensburg.

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Abstract

Phase-field models (WBM- and EFKP-model [1,2]) are extended in the present work to rapid solidification in which local non-equilibrium phenomena occur in bulk phases and within the diffuse solid-liquid interface. The extended model is developed using a thermodynamic approach to fast phase transitions within a diffuse interface in a binary system [3]. We investigate solute trapping, which has been introduced to define the processes of non-equilibrium solute redistribution at the solid-liquid interface. The solute trapping effect in solidifying binary melts is compared with previous sharp-interface models and using the present extensions of WBM- and EFKP- phase-field models. This work is supported by RFBR Nos. 08-02-91957NNIO_a, 09- 02-12110-ofi-m; ROSNAUKA No. 2009-1.5-507-007-002; DAAD No. A/08/81583; DFG No. HE 1601/19; DLR Agency under contract number 50WM0736. [1] A.A. Wheeler, W.J. Boettinger, G.B. McFadden: Phys. Rev. E 47 (1993) 1893. [2] B. Echebaria, R. Folch, A. Karma, M. Plapp: Phys. Rev. E 70 (2004) 061604. [3] P. Galenko, D. Jou: Phys. Rev. E 71 (2005) 046125.

Document Type:Conference or Workshop Item (Poster)
Title:Comparative analysis of models for solute trapping in rapid solidification
Authors:
AuthorsInstitution or Email of Authors
Abramova, Ekaterinaekaterina.abramova@dlr.de
Danilov, DenisKarlsruher Institut für Technologie (KIT), Karlsruhe
Galenko, Peterpeter.galenko@dlr.de
Herlach, Dieter M.dieter.herlach@dlr.de
Lebedev, VladimirUdmurt State University, Izhevsk
Date:24 March 2010
Journal or Publication Title:DPG Verhandlungen 2010, Condensed Matter Section
Page Range:p. 510
Status:Published
Keywords:Phase field modelling, Phase Transformations
Event Title:DPG Spring Meeting, Condensed Matter Section
Event Location:Regensburg
Event Type:international Conference
Event Dates:21. - 26. März 2010
Organizer:Deutsche Physikalische Gesellschaft
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Dieter Herlach
Deposited On:12 Apr 2010 09:34
Last Modified:12 Apr 2010 09:34

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