About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithm Development in Materials Science and Engineering
|
Presentation Title |
Extending the KineCluE Code to the Computation of Transport Coefficients in Concentrated Alloys |
Author(s) |
Pamela Camilos, Thomas Schuler, Maylise Nastar |
On-Site Speaker (Planned) |
Pamela Camilos |
Abstract Scope |
Modeling diffusion from the atomic scale is necessary because experimental studies are only feasible at high temperatures and in most systems, the full Onsager matrix cannot be measured. The problem is mostly solved in pure and dilute alloys but remains a challenge in concentrated alloys due to the vastness and complexity of the configuration space. In this work, we aim to extend the kinetic cluster expansion formalism in order to get an efficient evaluation of transport coefficients in concentrated alloys based on atomic-scale data. Our formalism relies on the Self-Consistent Mean Field Theory and is implemented in the KineCluE code. We treat the configuration exactly in the vicinity of the diffusing species, while further away atoms are replaced by a homogeneous mean-field. We compare our model’s performance to previous studies and provide a detailed study of the diffusion properties of model Fe-Cr alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Other, Other |