In-situ Observation of Solidification and its Application for Evaluation of Some Physical Properties(<Special Topic>Recent Development in Thermophysical Property Measurements of High-Temperature Melts for Crystal Growth)

Abstract

X-ray imaging using synchrotron radiation has enabled to observe solidification of metallic alloys in-situ. The observation provides direct information on evolution of microstructure and some defects. In addition, the precise measurement of dendrite tip shape can be used to evaluate physical properties (diffusivity and interfacial energy) with the dendrite growth models.