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Solidification of AlSi alloys in the ARTEMIS and ARTEX facilities including rotating magnetic fields – A combined experimental and numerical analysis

Hainke, Marc and Steinbach, Sonja and Dagner, Johannes and Ratke, Lorenz and Müller, Georg (2005) Solidification of AlSi alloys in the ARTEMIS and ARTEX facilities including rotating magnetic fields – A combined experimental and numerical analysis. In: Solidification and Gravity IV, 508, pp. 199-204. Trans Tech Publications. Fourth International Conference on Solidification and Gravity, 2004-09-06 - 2004-09-09, Miskolc, Hungary. ISBN 0-87849-991-1.

Full text not available from this repository.

Official URL: http://www.scientific.net

Abstract

The solidification microstructure is the consequence of a wide range of process parameters, like the growth velocity, the temperature gradient and the composition. Although the influence of these parameters is nowadays considerably well understood, an overall theory of the influence of convection on microstructural features is still lacking. The application of time dependent magnetic fields during directional solidification offers the possibility to create defined solidification and flow conditions. In this work, we report about solidification experiments in the ARTEMIS and ARTEX facilities including rotating magnetic fields (RMF). The effect of the forced melt flow on microstructural parameters like the primary and secondary dendrite arm spacing is analyzed for a wide range of magnetic field parameters. The experimental analysis is supported by a rigorous application of numerical modeling. An important issue is hereby the prediction of the resulting macrosegregation, i.e., differences in the composition on the scale of the sample (macroscale) due to the RMF. For the considered configuration and parameters an axial enrichment of Si is found beyond a certain magnetic field strength. The results are compared to available theories and their applicability is discussed.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Solidification of AlSi alloys in the ARTEMIS and ARTEX facilities including rotating magnetic fields – A combined experimental and numerical analysis
Authors:
AuthorsInstitution or Email of Authors
Hainke, MarcCGL, Erlangen
Steinbach, SonjaUNSPECIFIED
Dagner, JohannesCGL, Erlangen
Ratke, LorenzUNSPECIFIED
Müller, GeorgCGL, Erlangen
Date:2005
Journal or Publication Title:Solidification and Gravity IV
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:508
Page Range:pp. 199-204
Editors:
EditorsEmail
Roosz, A.UNSPECIFIED
Rettenmayr, M.UNSPECIFIED
Gacsi, Z.UNSPECIFIED
Publisher:Trans Tech Publications
Series Name:Materials Science Forum
ISBN:0-87849-991-1
Status:Published
Keywords:Solidification, numerical modeling, ARTEX, rotating magnetic field, macrosegregation, AlSi
Event Title:Fourth International Conference on Solidification and Gravity
Event Location:Miskolc, Hungary
Event Type:international Conference
Event Dates:2004-09-06 - 2004-09-09
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 Materialforschung unter Mikro-g (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Institute of Space Simulation > Center for Solidification of Undercooled Melts (ZEUS)
Deposited By: Prof. Lorenz Ratke
Deposited On:21 Dec 2005
Last Modified:27 Apr 2009 04:48

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