|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||Phase Field Modeling of Void Growth and Coarsening in Irradiated Materials
||Karim Ahmed, Srujan Rokkam, Thomas Hochrainer, Anter El-Azab
|On-Site Speaker (Planned)
We present a quantitative phase field model of void growth and coarsening in irradiated materials. In addition to the production, recombination, and diffusion of point defects in the bulk, the model takes into account the interaction of point defects with the void surface which affects strongly the overall growth and coarsening rates. Therefore, the model represents general growth kinetics from which the diffusion- and surface-controlled kinetics arise as limiting cases. We carried out a formal asymptotic analysis to match the phase field model to a recently developed sharp-interface theory. This analysis proves the consistency of the phase field model and fixes the model parameters in terms of regular thermodynamic and kinetic data. Sample results for void growth and coarsening in a single component metal based on sharp and diffuse interface models are presented.
||Planned: A print-only volume