Davidoff, Eugen and Galenko, Peter and Herlach, Dieter and Kolbe, Matthias and Wanderka, Nelly (2013) Spinodally decomposed patterns in rapidly quenched Co–Cu melts. Acta Materialia, 61, pp. 1078-1092. Elsevier. doi: http://dx.doi.org/10.1016/j.actamat.2012.10.010.
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Abstract
The Co–Cu system is analyzed in the region of the metastable miscibility gap with separation of the undercooled melt into the Co-rich and Cu-rich liquids. Phase separation of undercooled and quenched samples of the Co50Cu50 melt are investigated experimentally usingnan electromagnetic levitation technique, quenching on a Pb-solder-coated copper chill substrate and splat-quenching methods. It is found that quenching of the liquid samples with cooling rate J106 K s1 leads to a freezing of splats having the microstructure of spinodally decomposed liquids. The composition of the Co-rich phase measured by transmission electron microscopy is Co71.7Cu28.3 and that of the Cu-rich phase is Co26.8Cu73.2. These compositions are inside the spinodal region and close to the calculated spinodal boundary in the phase diagram of the Co–Cu system at temperatures below T 1450 K. Experimental results are compared with predictions of computational modeling using a model of fast spinodal decomposition.
Item URL in elib: | https://elib.dlr.de/80936/ | ||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||
Title: | Spinodally decomposed patterns in rapidly quenched Co–Cu melts | ||||||||||||||||||
Authors: |
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Date: | January 2013 | ||||||||||||||||||
Journal or Publication Title: | Acta Materialia | ||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||
Open Access: | No | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||
Volume: | 61 | ||||||||||||||||||
DOI: | http://dx.doi.org/10.1016/j.actamat.2012.10.010 | ||||||||||||||||||
Page Range: | pp. 1078-1092 | ||||||||||||||||||
Publisher: | Elsevier | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | Undercooling of Materials | ||||||||||||||||||
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 - Research under Space Conditions | ||||||||||||||||||
DLR - Research theme (Project): | R - Vorhaben Materialwissenschaftliche Forschung (old) | ||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||
Institutes and Institutions: | Institute of Materials Physics in Space | ||||||||||||||||||
Deposited By: | Herlach, Dieter | ||||||||||||||||||
Deposited On: | 29 Jan 2013 08:30 | ||||||||||||||||||
Last Modified: | 10 Jan 2019 15:45 |
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