|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Microstructural, Mechanical and Chemical Behavior of Solid Nuclear Fuel and Fuel-cladding Interface
||Analysis of secondary phase formation at U-10Mo fuel/cladding interfaces during manufacturing
||Adam Koziol, Miao Song, Kayla Yano, Alan Schemer-Kohrn, Ayoub Soulami, Vineet Joshi, Samuel Briggs, Elizabeth Kautz
|On-Site Speaker (Planned)
The monolithic Uranium 10 wt.% Molybdenum (U-10Mo) fuel system is a promising high assay low enriched uranium (HALEU) fuel system for the replacement of highly enriched uranium (HEU) fuels in high performance research reactors.
During manufacturing of U-10Mo HALEU fuels, thermomechanical processes induce phase transformations and secondary phase formation at the fuel/cladding (i.e., U-10Mo/Al6061) interface.
High resolution techniques (APT, TEM) are implemented to examine the microstructural evolution at the fuel/cladding and fuel/diffusion barrier interfaces for varying hot isostatic press (HIP) processing parameters.
Modifying thermomechanical process parameters drastically changed the interaction layer thickness, the distribution of minor alloying elements, and the extent of phase transformation. TEM and APT identified various phases including α-U, γ -UMo, USi, U2 MoSi2C(.33), Mo-enriched phase, as well as various regions of minor alloying element enrichment. The distribution of minor alloying elements and observed phases is compared to interaction layer development.
||Phase Transformations, Nuclear Materials,