| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments
|
| Presentation Title |
Quantitative Phase Field Modeling of Morphological Evolution of Voids under Ion Irradiation |
| Author(s) |
Sreekar Rayaprolu, Cuncai Fan, Xinghang Zhang, Anter El-Azab |
| On-Site Speaker (Planned) |
Sreekar Rayaprolu |
| Abstract Scope |
A quantitative diffuse interface model based on KKS formalism has been developed to describe the void evolution under irradiation. The model considers both vacancies and interstitials in the description of void evolution. Unique to the present model is the accurate description of the chemical potentials of defects in the void and matrix, as well as the presence of two mobility parameters in the equation of motion of the phase-field variable. Recent in situ experimental studies revealed the shrinkage, spheroidization, and migration of pre-existing voids in a Cu sample subjected to ion irradiation. Moreover, it was observed that the migration and morphology evolution of these pre-existing voids were highly dependent on the irradiation temperature. In this communication, we explain the underlying mechanisms for the change of void morphology including size, shape, and position using the novel phase-field model. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Phase Transformations |