About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamental Science of Microstructural Evolution and Phase Transformations: An MPMD/FMD/SMD Symposium in Honor of Peter Voorhees
|
| Presentation Title |
Defect Nucleation and Melting in Phase Field Crystal Models
|
| Author(s) |
Ken R. Elder, Brendan Aaron, Vidar SkogVoll, Luiza Angheluta |
| On-Site Speaker (Planned) |
Ken R. Elder |
| Abstract Scope |
Defects like dislocations and vortices have a strong influence on material
properties and their response to external forces. However, determining the
nucleation criteria for such defects under various conditions is challenging.
In this work, the stability of strained periodic structures to small
perturbations is examined. The conditions (effective temperature, average
density, type and magnitude of strain, etc.,) under which such structures
become linear unstable are derived for both one and two dimensional systems.
Depending on the conditions, the instability can lead to the nucleation
of dislocations or, in liquid/solid coexistence regions, to local melting.
Both analytic and numerical calculations are presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Phase Transformations |