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.
![]() |
PDF
- Only accessible within DLR
- Published version
1MB |
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/ | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Article | |||||||||||||||||||||
Title: | Confirmation of Anomalous Nucleation in Zirconium | |||||||||||||||||||||
Authors: |
| |||||||||||||||||||||
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 |
Repository Staff Only: item control page