Mechanical Properties of Irradiated U-10 wt. %Mo Alloy Degraded by Porosity Development

Schulthess, Jason L.; Baird, Katelyn; Petersen, Philip; Salvato, Daniele; Ozaltun, Hakan; Hanson, William A.; Ullum, Nicholas; Giglio, Jeffrey; Cole, James I.

doi:10.1115/1.4064779

Title: Mechanical Properties of Irradiated U-10 wt. %Mo Alloy Degraded by Porosity Development

Journal Article · 16 April 2024 · Journal of Nuclear Engineering and Radiation Science

DOI: https://doi.org/10.1115/1.4064779 · OSTI ID:2349335

^[1]; Baird, Katelyn ^[1]; Petersen, Philip ^[1]; Salvato, Daniele ^[1]; Ozaltun, Hakan ^[2]; Hanson, William A. ^[1]; Ullum, Nicholas ^[1]; Giglio, Jeffrey ^[1]; Cole, James I. ^[1]

Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Idaho National Laboratory (INL), Idaho Falls, ID (United States); US Nuclear Regulatory Commission (NRC), Rockville, MD (United States)

In this study, a plate-type nuclear fuel consisting of a solid monolithic foil of U-10 wt. %Mo is under development for use in the United States' high-performance research reactors. In support of developing this fuel, the fuel has been fabricated for the first time by a commercial fuel vendor and subsequently irradiated in a test reactor. This provides an opportunity to evaluate postirradiation mechanical properties of the commercially fabricated fuel. Four-point bend testing was conducted on the irradiated U-10Mo samples to generate the fuel material properties, including the modulus of elasticity and the bending strength. Although the material behaves in a brittle manner due to the accumulated porosity, a general trend of strength and modulus reduction was found as fission density increases. The data produced was evaluated using both Weibull statistics and a modulus degradation model with recommendations provided.

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Research Organization:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC07-05ID14517

OSTI ID:: 2349335

Report Number(s):: INL/JOU--23-75174-Rev000

Journal Information:: Journal of Nuclear Engineering and Radiation Science, Journal Name: Journal of Nuclear Engineering and Radiation Science Journal Issue: 3 Vol. 10; ISSN 2332-8983

Publisher:: ASMECopyright Statement

Country of Publication:: United States

Language:: English

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