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Ratke, Lorenz and Genau, Amber (2010) Evolution of specific surface area with solid fraction during solidification. Acta Materialia, 58 (12), pp. 4207-4211. Elsevier. DOI: doi:10.1016/j.actamat.2010.04.012
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Abstract
The specific surface area varies with solid fraction during phase transformation from liquid to solid. The few measurements available show a non-linear dependence of the specific surface area on the solid fraction, with an initial increase as the amount of solid increases, followed by a decrease as the system moves toward complete transformation. We derive a simple model for this behaviour assuming a combination of growth and coalescence. We obtain a relation exhibiting an increase with the square root of fraction solid at low volume fractions, independent of a growth law, and a decrease at higher volume fractions which depends on the model chosen to describe the coalescence of dendrites. By choosing an appropriate constant, the model accurately describes recent data presented by Limodin and coworkers.
| Item URL in elib: | https://elib.dlr.de/64412/ | |||||||||
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| Document Type: | Article | |||||||||
| Title: | Evolution of specific surface area with solid fraction during solidification | |||||||||
| Authors: |
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| Date: | May 2010 | |||||||||
| Journal or Publication Title: | Acta Materialia | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | Yes | |||||||||
| In ISI Web of Science: | Yes | |||||||||
| Volume: | 58 | |||||||||
| DOI : | doi:10.1016/j.actamat.2010.04.012 | |||||||||
| Page Range: | pp. 4207-4211 | |||||||||
| Publisher: | Elsevier | |||||||||
| Status: | Published | |||||||||
| Keywords: | Fraction solid; Specific surface area; Growth; Coalescence | |||||||||
| 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: | Ratke, Prof. Lorenz | |||||||||
| Deposited On: | 21 Jun 2010 09:23 | |||||||||
| Last Modified: | 07 Feb 2013 20:59 |
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