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Ludwig, Andreas und Wu, Menghuai und Abandano, Merlin und Ratke, Lorenz (2005) Graviyt-Induced Convection during Directional Solidification of Hypermonotectic Alloys. In: Solidification and Gravity IV, 508, Seiten 193-198. Trans Tech Publications. Fourth International Conference on Solidification and Gravity, 2004-09-06 - 2004-09-09, Miskolc, Hungary. ISBN 0-87849-991-1.
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Offizielle URL: http://www.scientific.net
Kurzfassung
A two-phase volume-averaging model developed for the simulation of the dynamic decomposition and solidification of hypermonotectic alloys was used to study the occurrence of convection phenomena during directional solidification of a hypermonotectic alloy (Al-10 wt.%Bi) under terrestrial condition. The model accounts for nucleation and growth of secondary phase droplets, Marangoni and Stokes forces, solute partitioning, heat release due to decomposition and solidification. It is shown that the appearance and growth of secondary droplets is accompanied with a continuous downwards motion of droplets, which rapidly becomes unstable. After relaxation of this dynamic motion the advancing solidification front freezes in the resulting non-uniform droplet distribution.
| elib-URL des Eintrags: | https://elib.dlr.de/20782/ | ||||||||||||||||||||
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| Dokumentart: | Konferenzbeitrag (Vortrag, Paper) | ||||||||||||||||||||
| Titel: | Graviyt-Induced Convection during Directional Solidification of Hypermonotectic Alloys | ||||||||||||||||||||
| Autoren: |
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| Datum: | 2005 | ||||||||||||||||||||
| Erschienen in: | Solidification and Gravity IV | ||||||||||||||||||||
| Referierte Publikation: | Nein | ||||||||||||||||||||
| Open Access: | Nein | ||||||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||
| Band: | 508 | ||||||||||||||||||||
| Seitenbereich: | Seiten 193-198 | ||||||||||||||||||||
| Herausgeber: |
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| Verlag: | Trans Tech Publications | ||||||||||||||||||||
| Name der Reihe: | Materials Science Forum | ||||||||||||||||||||
| ISBN: | 0-87849-991-1 | ||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||
| Stichwörter: | Hypermonotectic, decomposition, directional solidification, modeling, droplet motion, convection, phase distribution | ||||||||||||||||||||
| Veranstaltungstitel: | Fourth International Conference on Solidification and Gravity | ||||||||||||||||||||
| Veranstaltungsort: | Miskolc, Hungary | ||||||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||
| Veranstaltungsbeginn: | 6 September 2004 | ||||||||||||||||||||
| Veranstaltungsende: | 9 September 2004 | ||||||||||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||||||
| HGF - Programm: | Weltraum (alt) | ||||||||||||||||||||
| HGF - Programmthema: | W FR - Forschung unter Weltraumbedingungen (alt) | ||||||||||||||||||||
| DLR - Schwerpunkt: | Weltraum | ||||||||||||||||||||
| DLR - Forschungsgebiet: | W FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | W - Vorhaben Materialforschung unter Mikro-g (alt) | ||||||||||||||||||||
| Standort: | Köln-Porz | ||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Materialphysik im Weltraum > Institut für Raumsimulation | ||||||||||||||||||||
| Hinterlegt von: | Ratke, Prof. Lorenz | ||||||||||||||||||||
| Hinterlegt am: | 21 Dez 2005 | ||||||||||||||||||||
| Letzte Änderung: | 24 Apr 2024 19:02 |
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