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Steinbach, Sonja and Ratke, Lorenz (2005) In Situ Optical Determination of Fraction Solid of AlSiMg Alloys. In: Solidification and Gravity IV, 508, pp. 491-496. 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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Official URL: http://www.scientific.net
Abstract
In this paper we report on a new optical technique to measure in situ the fraction solid during solidification. The technique utilizes the extreme properties of silica aerogels, being optically transparent in the visible and near infrared. From measured brightness time profiles the fraction solid can be derived using a suitable theoretical approach. The technqiue is tested on a technical AlSiMg alloy (A357) solidified directionally in the furnace facility ARTEMIS. The results are compared with the well-known theoretical expressions of the lever rule and the Scheil relation. The mesured fraction solid as a function of temperature agrees well with the model of Scheil which shows the capabilities of the new technique.
| Item URL in elib: | https://elib.dlr.de/20784/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Paper, Poster) | ||||||||||||||||
| Title: | In Situ Optical Determination of Fraction Solid of AlSiMg Alloys | ||||||||||||||||
| Authors: |
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| Date: | 2005 | ||||||||||||||||
| Journal or Publication Title: | Solidification and Gravity IV | ||||||||||||||||
| Refereed publication: | No | ||||||||||||||||
| Open Access: | No | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||
| Volume: | 508 | ||||||||||||||||
| Page Range: | pp. 491-496 | ||||||||||||||||
| Editors: |
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| Publisher: | Trans Tech Publications | ||||||||||||||||
| Series Name: | Materials Science Forum | ||||||||||||||||
| ISBN: | 0-87849-991-1 | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | solidification, aluminium alloys, image analysis, optical spectroscopy, fraction solid | ||||||||||||||||
| Event Title: | Fourth International Conference on Solidification and Gravity | ||||||||||||||||
| Event Location: | Miskolc, Hungary | ||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||
| Event Start Date: | 6 September 2004 | ||||||||||||||||
| Event End Date: | 9 September 2004 | ||||||||||||||||
| 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 > Institute of Space Simulation > Center for Solidification of Undercooled Melts (ZEUS) | ||||||||||||||||
| Deposited By: | Ratke, Prof. Lorenz | ||||||||||||||||
| Deposited On: | 21 Dec 2005 | ||||||||||||||||
| Last Modified: | 24 Apr 2024 19:02 |
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