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Anomalous dendrite growth in undercooled melts of Al–Ni alloys in relation to results obtained in reduced gravity

Lengsdorf, Roman and Holland-Moritz, Dirk and Herlach, Dieter, M. (2009) Anomalous dendrite growth in undercooled melts of Al–Ni alloys in relation to results obtained in reduced gravity. Scripta Materialia (10), p. 1016. Elsevier.

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Abstract

Dendrite growth velocities are measured as a function of undercooling on Al–Ni alloys using electromagnetic levitation, both on Earth and in reduced gravity. Six alloys of various compositions are investigated, one of them for comparative investigations in reduced gravity. Whereas on the Ni-rich side, growth velocity increases with increasing undercooling, Al-rich alloys show an unusual decrease in growth velocity with increasing undercooling. Experiments in reduced gravity suggest that this anomalous behavior is caused by forced convection.

Item URL in elib:https://elib.dlr.de/61115/
Document Type:Article
Title:Anomalous dendrite growth in undercooled melts of Al–Ni alloys in relation to results obtained in reduced gravity
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lengsdorf, RomanRuhr-Universität BochumUNSPECIFIED
Holland-Moritz, Dirkdirk.holland-moritz (at) dlr.deUNSPECIFIED
Herlach, Dieter, M.dieter.herlach (at) dlr.deUNSPECIFIED
Date:2009
Journal or Publication Title:Scripta Materialia
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Page Range:p. 1016
Publisher:Elsevier
Status:Published
Keywords:Dendrite growth, undercooled melts
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: Parpart, Ingeborg
Deposited On:25 Nov 2009 11:37
Last Modified:06 Sep 2019 15:18

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