Application of RMF during solidification and ist influence on the microstructure of solidified PbSn Alloys

It is already known that the microstructure of a metallic alloy can be affected in a significant way due to the convection in the liquid phase during solidification. A time varying magnetic field can be applied to produce a flow field in the melt which influences the nucleation and growth processes. The aim of our research program is to find an strategy to refine the microstructure of castings by an optimal combination of magnetic field intensity, field frequency and cooling rate. Furthermore, the basic mechanisms controlling the solodification by magnetic fields are investigated.