About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials Systems for the Future of Fusion Energy
|
Presentation Title |
N-28: Promoting Radiation Resistance in Metallic Solid Solutions via the Use of Multiple Synergistic Solutes |
Author(s) |
Soumyajit Jana, Thomas Schuler, Pascal Bellon, Robert Averback |
On-Site Speaker (Planned) |
Soumyajit Jana |
Abstract Scope |
One strategy to increase radiation resistance of solid solutions relies on the addition of solutes that bind strongly to point defects, in particular to vacancies, to slow down their migration and promote recombination. In most alloy systems, however, vacancy-binding solutes tend to have high mobility and to experience solute drag, which progressively removes solute from grain interiors to the sinks. A novel approach to overcome this limitation is considered by using two synergistic solutes, B and C in an A matrix, where the B solute binds to vacancies while the C solute is a slow diffuser that binds to B. Kinetic Monte Carlo simulations and KineCluE transport calculations are employed to screen for promising solutes, such as Sn and Ni in Cu, by quantifying solute efficiency in promoting recombination over solute drag. Radiation resistance is shown to be significantly improved when B and C solutes form clusters prior to irradiation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Modeling and Simulation, Computational Materials Science & Engineering |