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Mushy Zone Coarsening in an AlCu30 Alloy Accelerated by a Rotating Magnetic Field

Kasperovich, Galina and Genau, Amber and Ratke, Lorenz (2011) Mushy Zone Coarsening in an AlCu30 Alloy Accelerated by a Rotating Magnetic Field. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 42 A, pp. 1657-1666. DOI: 10.1007/s11661-010-0542-6. ISSN 0360-2133.

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Official URL: http://www.springerlink.com/content/gq14v872px0861l3/

Abstract

Annealing experiments were performed on a near-eutectic Al-30 wt pct Cu alloy held in temperature gradients from 0.1 to 3 K/mm for annealing times of 10 to 500 minutes, with and without the application of rotating magnetic fields. After annealing, metallographic analysis was carried out on sections of the samples with a constant fraction solid of 10 pct. X-ray tomography was also used to create three-dimensional (3-D) reconstructions of the microstructures with a spatial resolution of approximately 1 lm. The specific surface area was measured in two dimensions and three dimensions, as well as the local curvature distribution on the 3-D reconstructed images. The microstructures show clearly that fluid flow accelerates coarsening of the mush and that the temperature gradient has a pronounced and unexpected influence on the coarsening kinetics.

Document Type:Article
Title:Mushy Zone Coarsening in an AlCu30 Alloy Accelerated by a Rotating Magnetic Field
Authors:
AuthorsInstitution or Email of Authors
Kasperovich, Galinagalina.kasperovich@dlr.de
Genau, Amberamber.genau@uab.edu
Ratke, Lorenzlorenz.ratke@dlr.de
Date:May 2011
Journal or Publication Title:Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:42 A
DOI:10.1007/s11661-010-0542-6
Page Range:pp. 1657-1666
ISSN:0360-2133
Status:Published
Keywords:mushy zone, coarsening, fluid flow
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: Prof. Lorenz Ratke
Deposited On:09 May 2011 09:00
Last Modified:07 Feb 2013 19:44

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