|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||Atomic to Mesoscale Research and Development for U3Si2 Accident Tolerant Fuel
||Yongfeng Zhang, David Andersson
|On-Site Speaker (Planned)
This presentation summarizes the progress in atomic to mesoscale research and development regarding the U3Si2 fuel, which is a promising candidate for accident tolerant fuel with however the behavior at normal operation and accident scenarios unclear. To fill in this blank, the multiscale modeling and simulation approach is adopted to develop atomic to mesoscale tool and to obtain fundamental properties and mechanisms that govern the behavior of U3Si2. Progresses made include the crystal symmetry, elasticity, and basic defect properties from density functional theory calculations, development of interatomic potentials which have been used to compute interfacial properties, and development of phase field models for irradiation induced swelling. The research and development at various scales share the same objective of predicting the microstructure evolution and property degradation during fuel performance, in supporting of engineering fuel performance modeling at the pin level. This work is supported by the DOE NEAMS program.
||Planned: Supplemental Proceedings volume