DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2003 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

M: Metallphysik

M 18: Symposium: Phasenumwandlungen in Schmelzen VII

M 18.1: Talk

Tuesday, March 25, 2003, 14:45–15:00, IFW A

Motion of a Nd-Fe-B melt in levitated or float-zone operated samples and its control — •Gunter Gerbeth1, Janis Priede1, Victor Shatrov1, Regina Hermann2, and Octavian Filip21Forschungszentrum Rossendorf, PF 510119, 01324 Dresden — 2IFW Dresden, Institut für Metallische Werkstoffe, PF 270016, 01171 Dresden

The microstructure of Nd-Fe-B alloys changes if the convection in the melt varies. A controlled influence on the melt flow is possible via magnetic fields or sample rotations. The experimental techniques behind are the electromagnetic levitation, mechanical sample rotations and a specially designed float-zone arrangement. We present theoretical/numerical results for the melt convection in those configurations. The melt flow in a levitated droplet is studied under the additional effect of a global sample rotation which may lead to a strong suppression of internal motions. A specially designed two-phase stirrer offers a strong influence on the melt flow in the float-zone facility.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2003 > Dresden