| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments II
|
| Presentation Title |
Improving Radiation Resistance in Metal Alloys via the Use of Multiple Synergistic Solutes |
| Author(s) |
Soumyajit Jana, Pascal Bellon, Robert Averback |
| On-Site Speaker (Planned) |
Soumyajit Jana |
| Abstract Scope |
Strong binding between point defects like vacancies and matrix-specific solutes can reduce defect diffusion, resulting in higher recombination rates and thus higher radiation resistance. These solutes, however, are very mobile and thus quickly dragged to point defect sinks, where they segregate. To prevent this, we consider the addition of a second solute ‘C’ to a vacancy trapping A-1 at. % B alloy. We show using transport theory calculations and KMC simulations that adding 1 at. % of a non-vacancy trapping solute ‘C’ can extend the resistance against drag by more than an order of magnitude in dose if ‘C’ is a slow diffuser in ‘A’ and binds to ‘B’. Motivated by these simulations, Cu-Sn-Nb dilute thin films are characterized by electron microscopy and atom probe tomography before and after 2 MeV Ti ion irradiation to probe the effectiveness of Nb in suppressing Sn solute drag under irradiation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Nuclear Materials, Phase Transformations |