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http://bura.brunel.ac.uk/handle/2438/3023
Title: | Nucleation and phase selection in undercooled melts: Magnetic alloys of industrial relevance (MAGNEPHAS) |
Authors: | Löser, W Hermann, R Woodcock, TG Fransaer, J Krivilyov, M Granasy, L Pusztai, T Tóth, GI Herlach, DM Holland-Moritz, D Kolbe, M Volkmann, T |
Issue Date: | 2008 |
Publisher: | Japan Society of Microgravity Application |
Citation: | Journal of the Japan Society of Microgravity Application. 25(3) |
Abstract: | Studies of phase selection and microstructure evolution in high-performance magnetic materials are an urgent need for optimization of production routes. Containerless solidification experiments by electromagnetic levitation and drop tube solidification were conducted in undercooled melts of Fe-Co, Fe-Ni soft magnetic, and Nd-Fe-B hard magnetic alloys. Melt undercooling under microgravity was achieved in the TEMPUS facility during parabolic flight campaigns. For Fe-Co and Fe-Ni alloys significant effects of microgravity on metastable phase formation were discovered. Microstructure modifications as well as metastable phase formation as function of undercooling and melt flow were elucidated in Nd-Fe-B. Modeling of solidification processes, fluid flow and heat transfer provide predictive tools for microstructure engineering from the melt. They were developed as a link between undercooling experiments under terrestrial and microgravity conditions and the production routes of magnetic materials. |
URI: | http://bura.brunel.ac.uk/handle/2438/3023 |
Appears in Collections: | Materials Engineering Brunel Centre for Advanced Solidification Technology (BCAST) |
Files in This Item:
File | Description | Size | Format | |
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JJSMA_Laszlo08.pdf | 376.35 kB | Adobe PDF | View/Open |
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