The growth of large single-crystals of exacting quality presents some of the most difficult challenges in materials processing. Two numerical studies relevant to understanding microgravity crystal growth experiments are presented. Using a 1D finite element (FE) model for transient solidification with a moving boundary coupled with the Stefan-Maxwell equation for species transport, one assesses the validity of a pseudo-binary approximation to describe segregation phenomena during diffusion limited growth of a model ternary alloy. The other uses a simplified FE model for 3D transient fluid flow for Bridgman growth. Initial results from both studies are presented.
|Original language||English (US)|
|Number of pages||6|
|Journal||Materials Science Forum|
|State||Published - 2000|
|Event||Proceedings of the 1999 3rd International Conference on Solidification and Gravity - Miskolc, Hung|
Duration: Apr 25 1999 → Apr 28 1999