|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Frontiers in Solidification: An MPMD Symposium in Honor of Michel Rappaz
||Phase-field Crystal Modeling of Crystal Nucleation Including Homogeneous and Heterogeneous Processes, and Growth Front Nucleation
||Laszlo Granasy, Frigyes Podmaniczky, Gyula I. Tóth
|On-Site Speaker (Planned)
Structural aspects of crystal nucleation in undercooled liquids are explored using a nonlinear hydrodynamic theory of freezing proposed recently , which is based on combining fluctuation hydrodynamics with the phase-field crystal (PFC) theory. It will be shown that unlike the usual PFC models of diffusive dynamics, within the hydrodynamic approach not only the homogeneous and heterogeneous nucleation processes are accessible, but also growth front nucleation, which leads to the formation of differently oriented grains at the front in strongly driven systems (high undercooling/supersaturation). Apparently, the formation mechanism is based on the interference of the extended ordering waves ahead of the crystallization front appearing close to the linear stability limit of the liquid.
 G.I. Tóth, L. Gránásy, G. Tegze: Nonlinear hydrodynamic theory of crystallization. J. Phys.: Condens. Matter 26, 055001 (2014).