Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf

Real-time and in-situ observations of the density distribution within thin solidifying samples reach a spatial resolution of a few microns and contribute essentially to an improved understanding of dendritic growth processes. The dimension of the solute boundary layers ahead of the solidification front as well as the onset of solutal-driven melt convection in the mushy zone and the bulk liquid can also be derived from image processing. Exemplarily, we present a bottom-up solidification of a Ga-25wt%In alloy under the influence of buoyancy-driven and electromagnetically driven convection.