|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Materials Science and Engineering for Nuclear Energy
||Rate Theory Modeling of Fission Gas Behavior in Ion Implantation Experiment
||Xin Xie, Wenhua Zhang, Yedong Gao, Jing Liu, Hang Zang, Wenbo Liu, Bo Zhang, Di Yun
|On-Site Speaker (Planned)
For the formation of bubbles, fission gas generated during irradiation in metals would cause severe swelling and degrade material performance significantly. This paper simulated bubble behaviors in single crystal molybdenum under Xe+ beam implantation at the COMSOL finite-element platform, based on rate theory. And the effect of grain boundary was considered for the occurrence of polygonization at high temperature. This paper aims to provide an aid in material performance analysis. 300℃ and 600℃ were selected respectively and the peak ions flux reached 4e16 ions/cm2 in our simulation. The simulation results were consistent with those of an in-situ transmission electron microscope experiment. The paper successfully built a simplified rate theory model and backed-out proper values and physical meaning for needed parameters. Through our works, the results build a solid foundation for the further research on metallic fuel swelling and metallic fuel model development.
||Planned: Supplemental Proceedings volume