| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Development of a Multicomponent Ideal-solution (MCIS) Free Energy Phase-field Model for Simulation of Nuclear Materials Microstructural Evolution |
| Author(s) |
Chaitanya Vivek Bhave, Amani Cheniour, Daniel Schwen, Michael Tonks |
| On-Site Speaker (Planned) |
Chaitanya Vivek Bhave |
| Abstract Scope |
The development of grand-potential (GP) based phase-field models requires an analytical inverse function for the concentration of the chemical components in terms of the chemical potentials. Due to the lack of such an inverse function for multicomponent ideal solution free energy functions, past GP models have required the use of simpler free energy functions, limiting the physical accuracy of the models. In this work, we derive a general inverse function for an ideal solution approximation free energy system with multiple components on a single lattice. This MCIS model is then applied to two problems of interest in nuclear materials evolution – molten salt corrosion of Ni-Cr alloys, and intragranular fission gas bubble growth in UO2. The model predictions are compared against predictions made using the Kim-Kim-Suzuki phase-field model to evaluate model accuracy and computational performance. |
| Proceedings Inclusion? |
Undecided |