Atom probe tomography of segregation at grain boundaries and gas bubbles in neutron irradiated U-10&nbsp;wt% Mo fuel

Arivu, Maalavan; Hoffman, Andrew; Bachhav, Mukesh; Aitkaliyeva, Assel; Wu, Yaqiao; Miller, Brandon; Keiser, Dennis; Gan, Jian; Wen, Haiming

doi:10.1016/j.matlet.2024.136414

Atom probe tomography of segregation at grain boundaries and gas bubbles in neutron irradiated U-10 wt% Mo fuel

Journal Article · Thu Apr 04 00:00:00 EDT 2024 · Materials Letters

DOI:https://doi.org/10.1016/j.matlet.2024.136414· OSTI ID:2439979

^[1]; Hoffman, Andrew ^[2]; ^[3]; ^[4]; ^[5]; ^[3]; Keiser, Dennis ^[3]; ^[3]; Wen, Haiming ^[1]

Missouri Univ. of Science and Technology, Rolla, MO (United States)
Missouri Univ. of Science and Technology, Rolla, MO (United States); GE Research, Niskayuna, NY (United States)
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Univ. of Florida, Gainesville, FL (United States)
Boise State Univ., ID (United States); Center for Advanced Energy Studies, Idaho Falls, ID (United States)

During neutron irradiation to fission densities > 5.2 × 10²¹ fiss/cm³, Xe agglomerates forming gas bubbles of varying size within the U-Mo fuel matrix. Herein, segregation of fission products to Xe bubbles and grain boundaries (GB) were studied using atom probe tomography (APT). Segregation behavior was found to vary among GBs, small bubbles (<10 nm), and larger bubbles (>10 nm). Solid fission products were enriched at GBs and larger bubbles, but not at small bubbles. Finally, a denuded zone was identified adjacent to a > 10 nm Xe gas bubble and a GB.

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

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC07-05ID14517

OSTI ID:: 2439979

Alternate ID(s):: OSTI ID: 2337979

Report Number(s):: INL/JOU--24-78897-Rev000

Journal Information:: Materials Letters, Journal Name: Materials Letters Vol. 365; ISSN 0167-577X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (10)

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36 MATERIALS SCIENCE
U-Mo fuel
atom probe tomography
fission products
grain boundaries

Atom probe tomography of segregation at grain boundaries and gas bubbles in neutron irradiated U-10 wt% Mo fuel

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References (10)

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