|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Materials Science and Engineering for Nuclear Energy
||Phase Field Modeling of Grain Boundary Evolution in Porous Oxides: Grain Growth and Pore Mobility Effects
||Anter El-Azab, Karim Ahmed
|On-Site Speaker (Planned)
We present a phase field model for investigating grain boundary evolution in porous oxides with applications to UO2 and CeO2. The model takes into account the interactions between pores and grain boundaries as well as the pore mobility effects. Using a formal asymptotic analysis, the phase field model was matched to its sharp-interface counterpart and all model parameters were uniquely determined. Therefore, the model is able to obtain accurate growth rates that can be compared with experiments. The model was used to reveal various growth regimes in porous oxides and sort the boundary-controlled versus pore-controlled growth kinetic regimes. The model results showed that the pore breakaway phenomenon can only be observed in 3D simulations. The important features of the model and results will be presented.
||Planned: Supplemental Proceedings volume