About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Quantifying the Microscopic Degrees of Freedom of Grain Boundaries |
Author(s) |
Ian Winter, Timofey Frolov |
On-Site Speaker (Planned) |
Ian Winter |
Abstract Scope |
For fixed macroscopic degrees of freedom of a grain boundary, there exists a large multiplicity of states characterized by different relative grain translations. More recently, another degree of freedom, the number of atoms at a grain boundary, has emerged as an equally important component as the relative grain translation to describe grain boundary structural multiplicity. We introduce a generalized grain boundary translation vector that can act as an effective descriptor of grain boundary structure and show that this vector provides a link between the previous disparate microscopic degrees of freedom of grain boundaries. We further show how the microscopic degrees of freedom of a grain boundary can be used to quantify structural transformations. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525 (SAND2022-1056 A). This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Phase Transformations, Thin Films and Interfaces |