|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Ceramic Materials for Nuclear Energy Research and Applications
||Towards a Model of Coupled Irradiation and Corrosion
||Amitava Banerjee, Aaron A Kohnert, Edward F Holby, Laurent Capolungo, Blas P. Uberuaga
|On-Site Speaker (Planned)
||Blas P. Uberuaga
Materials in reactors are exposed to multiple extreme environments simultaneously. Two of these environments – irradiation and corrosion – can lead to extensive changes in the materials properties. However, while there have been a number of empirical observations of their combined effects, there is still much unknown at a fundamental level regarding the synergies between these two extremes. Here, we present the foundations of a model of coupled irradiation and corrosion. Using Fe-Fe2O3 as a model system, density functional theory (DFT) calculations at the hybrid level are used to characterize the thermodynamics and kinetics of radiation-induced point defects. These are then used to parameterize a cluster dynamics model that accounts for the radiation-induced defect supersaturations on the corrosive response of the material. This model, while based on a number of assumptions, reveals that, based on conditions, radiation damage can have a dramatic effect on corrosion.