About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Bulk Metallic Glasses XX
|
Presentation Title |
Crystal Nucleation from a Hard-sphere Liquid |
Author(s) |
Frans A. Spaepen, Zizhao Will Wang, David A Weitz |
On-Site Speaker (Planned) |
Frans A. Spaepen |
Abstract Scope |
The rate of crystal nucleation from the melt is one of the defining limits of glass formation. The hard-sphere system has been extensively studied theoretically, by computer simulation, and experimentally in colloidal systems. Although colloidal glasses can be readily formed, our understanding of the crystal nucleation kinetics remains incomplete. This talk will review three aspects: (i) The predictions of classical nucleation theory, based on the equations of state of the crystalline and liquid phases, and the values of the crystal-liquid interfacial free energy obtained from simulation or experiment; (ii) the predictions of full-fledged computer simulations of the nucleation events; and (iii) the experimental observations of nucleation in hard-sphere colloidal liquids. The latter will include a new technique, in which large numbers of nucleation events are observed during continuous densification of the system by sedimentation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, Solidification, Other |