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Flow control during solidification of AlSi-alloys by means of tailored ac magnetic fields

Zhang, Y.; Räbiger, D.; Vogt, T.; Eckert, S.; Gerbeth, G.

This paper presents an experimental study which in a first stage is focused on obtaining quantitative information about the isothermal flow field exposed to various magnetic field configurations. Melt stirring has been realized by utilizing time-modulated AC magnetic fields in different variants. We consider time-modulated fields or combinations of traveling magnetic fields (TMF) and rotating magnetic fields (RMF). In a second step solidification experiments are carried out to verify the effect of a certain flow field on the solidification process. Our results demonstrate that the melt agitation using modulated magnetic fields offers a considerable potential for a well-aimed modification of casting properties by an effective control of the flow field.

Keywords: rotating magnetic field; travelling magnetic field; modulated fields; solidification; AlSi alloys

  • Journal of Iron and Steel Research International 19(2012)Suppl. 1-1, 574-577
  • Poster
    7th International Conference on Electromagnetic Processing of Materials, 22.-26.10.2012, Beijing, China

Permalink: https://www.hzdr.de/publications/Publ-17166
Publ.-Id: 17166