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The Influence of Fluid Flow on Intermetallic Phases in Al-cast Alloys

Steinbach, Sonja and Euskirchen, Natasja and Witusiewicz, Viktor and Sturz, Laszlo and Ratke, Lorenz (2006) The Influence of Fluid Flow on Intermetallic Phases in Al-cast Alloys. In: Materials Science Forum, 519-521, pp. 1795-1800. Trans Tech Publications, Switzerland. International Conference on Aluminum Alloys (ICAA-10), 2006-07-9 - 2006-07-13, Vancouver, Canada. ISBN 0-87849-408-1. ISSN 0255-5476

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

Abstract

Technical Al-Si alloys always contain sufficient amounts of Fe and Mn, especially alloys made from scrap. During casting, Fe-containing intermetallics, such as Al-Fe, Al-Fe-Si and Al-Fe-Mn-Si phases, are formed between the aluminum dendrites. Fe and Mn-rich intermetallic phases are well known to be strongly influential on mechanical properties in Al-Si alloys. In the present work the influence of controlled fluid flow conditions on the morphology and spatial arrangement on intermetallic phases in cast Al-Si alloys is characterized. A binary Al-7wt.%Si and a ternary Al-7wt.%Si-1wt.%Fe alloy was solidified under and without the influence of a rotating magnetic field (3mT at 50Hz) over a range of solidification velocities (0.015- 0.18mm/s) at a constant temperature gradient G of 3K/mm. The scientific results reached so far indicate a strong influence of the electromagnetic stirring on the primary dendrite and secondary dendrite arm spacings.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:The Influence of Fluid Flow on Intermetallic Phases in Al-cast Alloys
Authors:
AuthorsInstitution or Email of Authors
Steinbach, SonjaUNSPECIFIED
Euskirchen, NatasjaUNSPECIFIED
Witusiewicz, ViktorACCESS, Aachen
Sturz, LaszloACCESS, Aachen
Ratke, LorenzUNSPECIFIED
Date:2006
Journal or Publication Title:Materials Science Forum
Refereed publication:Yes
In ISI Web of Science:No
Volume:519-521
Page Range:pp. 1795-1800
Editors:
EditorsEmail
Poole, W. J.UNSPECIFIED
Wells, M. A.UNSPECIFIED
Lloyd, D. J.UNSPECIFIED
Publisher:Trans Tech Publications, Switzerland
ISSN:0255-5476
ISBN:0-87849-408-1
Status:Published
Keywords:Intermetallic phase, aluminides, directional solidification, Al-Si cast alloys
Event Title:International Conference on Aluminum Alloys (ICAA-10)
Event Location:Vancouver, Canada
Event Type:international Conference
Event Dates:2006-07-9 - 2006-07-13
Organizer:Department of Materials Engineering, The University of British Columbia, Canada
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: Dr.rer.nat. Sonja Steinbach
Deposited On:08 Aug 2007
Last Modified:27 Apr 2009 04:42

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