EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

In-situ monitoring of solidification processes can provide key characteristics for solidification modeling when careful interpretation of the data is performed. X-radiography observation is a relatively fast method to collect data on nucleation, growth and solute field dynamics in thin binary alloys under varying gravity conditions. To get additional information on the three-dimensional microstructure, such as the interaction between dendrites and interfaces as well as the crystallographic growth directions of the dendrites, we use complementary post-mortem analysis techniques. The combined characterization thus provides a more complete picture of microstructural evolution, highlights the effect of confinement, and reveals differences between alloy systems. These quantitatively obtained experimental data are then used as reference data for solidification modeling, whereby modeling and experiment benefit from each other in understanding and predicting certain solidification phenomena.