About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification X
|
| Presentation Title |
Atomistic Insights into Dendritic Growth during Solidification |
| Author(s) |
Yasushi Shibuta |
| On-Site Speaker (Planned) |
Yasushi Shibuta |
| Abstract Scope |
Recent advances in computational power have enabled molecular dynamics (MD) simulations to reach spatial scales up to several micrometers and 10 billion atoms. Coarse-grained (CG) methods further extend this capability, allowing direct observation of dendrite formation with four-fold symmetry during solidification. In this study, we performed large-scale CG-MD simulations to investigate crystal growth from a seed in an undercooled nickel melt within a quasi-two-dimensional system. As solidification proceeds, latent heat increases the temperature of the solid region, while the liquid cools to maintain the system at the predefined undercooling level. This creates a negative temperature gradient across the solid-liquid interface, with the liquid side cooler than the solid. The resulting interfacial instability promotes the formation of dendritic structures. Our results demonstrate that CG-MD simulations can effectively capture the mesoscale morphology evolution in metallic solidification. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Modeling and Simulation, |