About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Characterization of Nuclear Materials and Fuels with Advanced X-ray and Neutron Techniques
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Presentation Title |
Microstructure and Crystal Structure Studies in the U-Zr System |
Author(s) |
Sven C. Vogel, Yi Xie, Luca Capriotti, Michael T. Benson, Jason M. Harp |
On-Site Speaker (Planned) |
Sven C. Vogel |
Abstract Scope |
U-Zr–based nuclear fuel is a leading choice for sodium-cooled fast reactors, as it has advantages of high fissile density, high thermal conductivity, ease of fabrication, ability to incorporate minor actinides, and good compatibility with coolants. To investigate the microstructure evolution of U-Zr fuels, samples of U-2Zr, U-10Zr, U-35Zr, and U-50Zr were studied in situ by neutron time-of-flight diffraction on the HIPPO instrument at LANSCE. All samples underwent the same temperature profile of heating from room temperature to 600°C, then 650°C followed by 5°C increments to 700°C before an anneal at 800°C. During cooling, the same profile was applied except for a hold of several hours at 600°C prior to cooling back to room temperature. This temperature profile allows the kinetics of phase transformations between delta/omega, beta, and gamma phases occurring during heating and cooling to be studied. The results of this study will be presented. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Characterization, |