Ion irradiation testing of 14YWT ODS and HT-9

Technical Report · Thu Oct 23 00:00:00 EDT 2025

DOI:https://doi.org/10.2172/2999894· OSTI ID:2999894

Kim, Hyosim ^[1]; Schneider, Matthew M. ^[1]; Gordon, Emma Ansley ^[1]; Massey, Caleb ^[2]; Eftink, Benjamin P. ^[1]

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1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
2. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Ion irradiations were performed to compare a new generation of 14YWT, NFA-2, to the prior generation NFA-1. Irradiations were performed at 450 °C and to a peak dose of 500 dpa. The irradiation condition was chosen as a relevant temperature for scoping for an upcoming JOYO neutron irradiation, and the high dose was chosen to evaluate the exceptional microstructural stability to irradiation induced changes of 14YWT. For comparison, HT-9 was irradiated as the benchmark. Irradiation induced changes to the microstructures were limited for the 14YWT samples and extensive for the HT-9 benchmark.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE)
• DOE Contract Number: 89233218CNA000001
• OSTI ID: 2999894
• Report Number(s): LA-UR--25-30563
• Country of Publication: United States
• Language: English

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36 MATERIALS SCIENCE