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Kinetics of dendrite growth and dendritic fragmentation in the undercooled Co81.2Cu18.8 alloy's melt

Galenko, P.K. and Kolbe, M. and Herlach, D.M. and Rettenmayr, M. (2014) Kinetics of dendrite growth and dendritic fragmentation in the undercooled Co81.2Cu18.8 alloy's melt. Metallurgical Research & Technology, 111, pp. 295-303. Cambridge University Press. DOI: 10.1051/metal/2014019 ISBN ISSN: 2271-3646 ISSN 2271-3646

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Official URL: http://www.metallurgical-research.org

Abstract

The growth velocity during solidification of an undercooled melt of a Co-Cu alloy processed by electromagnetic levitation was measured using a high speed video camera. Applying a model of local non-equilibrium solidification, theoretical predictions of dendrite growth velocity and dendritic growth radii are compared with high-accuracy measurements of the growth kinetics. As the undercooling ΔT reaches a critical value consistent with the dendrite growth velocity being equal to the atomic diffusion speed VD in bulk liquid, ΔT = ΔT(VD), the velocity-undercooling relationship exhibits a break-point.

Item URL in elib:https://elib.dlr.de/92134/
Document Type:Article
Title:Kinetics of dendrite growth and dendritic fragmentation in the undercooled Co81.2Cu18.8 alloy's melt
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Galenko, P.K.Friedrich-Schiller Universität JenaUNSPECIFIED
Kolbe, M.Institut für Materialphysik im Weltraum, DLR, KölnUNSPECIFIED
Herlach, D.M.Institut für Materialphysik im Weltraum, DLR, KölnUNSPECIFIED
Rettenmayr, M.Friedrich-Schiller-Universität JenaUNSPECIFIED
Date:2014
Journal or Publication Title:Metallurgical Research & Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:111
DOI :10.1051/metal/2014019
Page Range:pp. 295-303
Editors:
EditorsEmail
Alberny, RobertSF2M
Steiler, Jean-MarcArcelorMittal
Publisher:Cambridge University Press
ISSN:2271-3646
ISBN:ISSN: 2271-3646
Status:Published
Keywords:undercooling, dendrite growth, solidification, modeling
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Materialforschung unter Mikro-g (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Kolbe, Matthias
Deposited On:24 Nov 2014 09:48
Last Modified:27 Feb 2015 16:08

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