X-ray radioscopy studies of solidification processes


X-ray radioscopy studies of solidification processes

Shevchenko, N.; Eckert, S.

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.

Keywords: solidification; in situ X-ray imaging; Ga-In alloy; flow pattern; freckle formation

  • Lecture (Conference)
    The International Symposium on Electromagnetic Flow Control in Metallurgy, Crystal Growth and Electrochemistry, 25.-27.03.2013, Dresden, Germany

Permalink: https://www.hzdr.de/publications/Publ-19966
Publ.-Id: 19966