|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Characterization and Modeling of Nuclear Fuels: Microstructure, Thermo-physical Properties
||On the Phases Observed in Irradiated U-19Pu-14Zr Fuels
||Assel Aitkaliyeva, Thaddeus Rahn, Karen Wright, Luca Capriotti
|On-Site Speaker (Planned)
In this contribution, systematic radial microstructural examination of irradiated U-19Pu-14Zr fuels was performed using electron probe microanalyzer (EPMA), focused ion beam (FIB), and transmission electron microscope (TEM). The crystal structure of observed phases was determined using selective area electron diffraction (SAED) in TEM and compositions using EPMA. The conducted microstructural characterization is significant because the structure of metal fuels is a complex function of composition, porosity, sodium content, texture, defect concentration, and crystalline phases. Of these, crystalline phases are arguably the most important in determining thermal, mechanical, and chemical behaviors of the fuel, and thus dominate the response of the fuel to a given set of operational conditions. Therefore, the conducted analysis provides a significant insight into metal fuel performance.
||Nuclear Materials, Phase Transformations, Other