Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
1 PublicationElectromagnetic melt flow control during solidification of metallic alloys
Eckert, S.; Nikrityuk, P. A.; Willers, B.; Räbiger, D.; Shevchenko, N.; Neumann-Heyme, H.; Travnikov, V.; Odenbach, S.; Voigt, A.; Eckert, K.
In this minireview, we summarize experimental and numerical studies particularly concerned with applications of rotating magnetic fields (RMF) or travelling magnetic fields (TMF) to directional solidification of metal alloys. After introducing some fundamentals of electromagnetic stirring, we review the insights gained into flow-induced modifications of microstructure and the formation of freckles and macrosegregations. We further discuss recent strategies, using time-modulated RMF and TMF, which aim to overcome the deficiencies of conventional stirring, in particular flow-induced macrosegregation, by effectively controlling the flow field. On the microscale, we show that time-varying flows are able to alter the sidebranch characteristics vital to the potential of fragmentation.
Keywords: solidification; electromagnetic stirring; rotating magnetic field; traveling magnetic field; grain refinement; macrosegregation
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European Physical Journal - Special Topics 220(2013), 123-138
DOI: 10.1140/epjst/e2013-01802-7
Cited 74 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-18422
Publ.-Id: 18422