About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithms Development in Materials Science and Engineering
|
Presentation Title |
Generating a database of dislocation predictions from classical interatomic potentials |
Author(s) |
Lucas M. Hale |
On-Site Speaker (Planned) |
Lucas M. Hale |
Abstract Scope |
Classical atomistic methods are powerful tools for exploring slip processes at the atomic scale. However, the observed slip mechanisms depend on the how the interatomic potentials predict dislocation core structures. Having a database of dislocation predictions across potentials supports users identifying which potentials are most suited for slip investigations and reveals relationships between different materials properties. A dislocation configuration generator is introduced that can create atomic configurations of straight dislocations for any crystal structure and dislocation type. The configuration generator allows for dislocations to be defined using Miller crystal vectors and planes, and can build dislocation monopole, small-cell dislocation dipole, and periodic array of dislocations configurations. Dislocation core structures are evaluated in high throughput across a wide range of interatomic potentials, crystal structures, and dislocation types. The resulting core structures are made available in an open database as part of the NIST Interatomic Potentials Repository project. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Mechanical Properties, Modeling and Simulation |