| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
Atomistic Modeling of Radiation Resistance in Concentrated Alloys |
| Author(s) |
Craig Daniels, Pascal Bellon, Robert Averback |
| On-Site Speaker (Planned) |
Pascal Bellon |
| Abstract Scope |
A long-considered strategy for designing radiation-resistant alloys is adding solutes that trap point defects, thus inhibiting their diffusion. These solutes promote vacancy-interstitial recombination and reduce the deleterious effects of defect and solute fluxes on the microstructure. These benefits usually have a limited lifespan as solutes that trap point defects are often dragged by defect fluxes to nearby sinks. We recently introduced a hybrid kinetic Monte Carlo algorithm specifically designed to be computationally efficient in alloys with trapping solutes. This algorithm makes it possible to go beyond the limit of infinite solute dilution, and thus to treat trapping by solute clusters. We apply our KMC code to a model alloy system that mimics Cu-Ag. As the Ag solute concentration increases, most of the trapping takes place on solute clusters, and therefore solute-solute interactions play a determinant role in the defect kinetics. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |