| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Materials and Science
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| Presentation Title |
Phase Decomposition in Uranium-Molybdenum Fuels Subjected to Low Neutron Fluences
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| Author(s) |
Maria A. Okuniewski, Gyuchul Park, Mehmet Topsakal, Simerjeet Gill, Lynne Ecker, Daniel Murray, Eric Dooryhee |
| On-Site Speaker (Planned) |
Maria A. Okuniewski |
| Abstract Scope |
Low-enriched uranium molybdenum (U-Mo) monolithic fuel is the primary candidate for research and test reactors to replace high-enriched uranium fuel to minimize proliferation concerns. Low fluence neutron irradiations (< 1 dpa) were carried out in the Advanced Test Reactor at temperatures ranging from 150oC to 350oC to understand the early stages of microstructural evolution in U-10 wt.%Mo fuel. Synchrotron X-ray scattering and electron microscopy techniques were used to characterize the phase evolution, phase fractions, ordering, and microchemical changes as a function of neutron dose, temperature, and fabrication technique. Particular attention was paid to the phase decomposition of the as-fabricated γ- U-10 wt.%Mo fuel to the α-U and γ’-U2Mo phases. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, |