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In Situ Optical Determination of Fraction Solid of AlSiMg Alloys

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.

Full text not available from this repository.

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.

Document Type:Conference or Workshop Item (Paper, Poster)
Title:In Situ Optical Determination of Fraction Solid of AlSiMg Alloys
Authors:
AuthorsInstitution or Email of Authors
Steinbach, SonjaUNSPECIFIED
Ratke, LorenzUNSPECIFIED
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. 491-496
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, 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 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 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: Prof. Lorenz Ratke
Deposited On:21 Dec 2005
Last Modified:27 Apr 2009 04:48

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