DIRECTIONAL SOLIDIFICATION OF PB-SN ALLOYS AFFECTED BY A ROTATING MAGNETIC FIELD

摘要

An experimental and numerical study with respect to the influence of a rotating magnetic field (RMF) on the directional solidification of Pb85wt%Sn and Pb25wt%Sn alloys will be presented. The effect of the electromagnetically driven convection on solidification parameters such as the cooling rate, the temperature gradient GL or the growth velocity of the liquidus isotherm V{sub}T was investigated. Significant effects of the flow on the macro- and microstructure of the solidified ingots are evident.