Bracker, G.P. and Schneider, Stephan and Wunderlich, R. and Fecht, H.-J. and Zhao, J. and Hyers, R.W. (2020) Confirmation of Anomalous Nucleation in Zirconium. JOM: Journal of the Minerals, Metals and Materials Society. Springer. doi: 10.1007/s11837-020-04257-7. ISSN 1047-4838.
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Official URL: https://link.springer.com/article/10.1007/s11837-020-04257-7
Abstract
Pure, low-oxygen zirconium samples have been observed to nucleate a solid phase under conditions during which the sample was expected to remain liquid. This phenomenon was first seen during Spacelab Mission MSL-1R (materials science laboratory) experiments and has since also been observed in the International Space Station (ISS) electromagnetic levitation (EML) facility on a different sample. Current work has been able to replicate these anomalous solidification events under a range of conditions in the ISS MSL-EML facility. The solidification events are not well explained by classical homogeneous or heterogeneous nucleation. The current theory is that collapsing voids in the melt create a local region of high pressure that results in local material being deeply undercooled and a strong driving force for solidification.
Item URL in elib: | https://elib.dlr.de/135540/ | ||||||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||||||
Title: | Confirmation of Anomalous Nucleation in Zirconium | ||||||||||||||||||||||||||||
Authors: |
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Date: | 6 July 2020 | ||||||||||||||||||||||||||||
Journal or Publication Title: | JOM: Journal of the Minerals, Metals and Materials Society | ||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||
DOI: | 10.1007/s11837-020-04257-7 | ||||||||||||||||||||||||||||
Publisher: | Springer | ||||||||||||||||||||||||||||
ISSN: | 1047-4838 | ||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||
Keywords: | EML, electromagnetic Levitation, microgravity | ||||||||||||||||||||||||||||
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 - Materials Research and Microgravity (MuM) | ||||||||||||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Materials Physics in Space | ||||||||||||||||||||||||||||
Deposited By: | Schneider, Dr.rer.nat. Stephan | ||||||||||||||||||||||||||||
Deposited On: | 20 Jul 2020 10:04 | ||||||||||||||||||||||||||||
Last Modified: | 23 Jul 2020 11:23 |
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