Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
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Influence of melt convection on microstructure evolution of Nd-Fe-B alloys using a forced crucible rotation techniqueBiswas, K.; Hermann, R.; Filip, O.; Acker, J.; Gerbeth, G.; Priede, J.
The forced crucible rotation technique has been applied to the solidification of Nd-Fe-B alloys. Specially sealed samples were subjected to well-defined forced rotation during induction heating and solidification. The resulting microstructure of the Nd-Fe-B alloys in consideration of melt convection has been investigated using scanning electron probe microscopy. The determination of the a-Fe volume fraction by measuring the magnetic moment in a vibrating sample magnetometer (VSM) resulted in a distinct reduction of the a-Fe volume fraction in samples with high crucible rotation frequencies. Furthermore, a new category of experiment has been started where a tailored magnetic field was applied in order to study the microstructure evolution due to an enhancement or suppression of the melt convection by additional alternating magnetic fields.
Magnetic and Superconducting Materials, 05.-09.09.2005, Agadir, Marocco
- Physica Status Solidi (C) 3(2006), 3277-3280
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