Atom Probe Tomography of Segregation at Grain Boundaries and Gas Bubbles in Neutron Irradiated U-10 wt% Mo Fuel

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

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

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

Division of Research and Economic Development

University of Florida
Idaho National Laboratory
Missouri University of Science and Technology

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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. A denuded zone was identified adjacent to a > 10 nm Xe gas bubble and a GB.

Original language	American English
Article number	136414
Journal	Materials Letters
Volume	365
DOIs	https://doi.org/10.1016/j.matlet.2024.136414
State	Published - 15 Jun 2024

EGS Disciplines

Materials Science and Engineering

Access to Document

10.1016/j.matlet.2024.136414

Cite this

@article{ea34e084d7984b81b292cf26f7a08426,

title = "Atom Probe Tomography of Segregation at Grain Boundaries and Gas Bubbles in Neutron Irradiated U-10 wt\% Mo Fuel",

abstract = "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. A denuded zone was identified adjacent to a > 10 nm Xe gas bubble and a GB.",

author = "Maalavan Arivu and Andrew Hoffman and Mukesh Bachhav and Assel Aitkaliyeva and Yaqiao Wu and Brandon Miller and Dennis Keiser and Jian Gan and Haiming Wen",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2024",

month = jun,

day = "15",

doi = "10.1016/j.matlet.2024.136414",

language = "American English",

volume = "365",

}

TY - JOUR

T1 - Atom Probe Tomography of Segregation at Grain Boundaries and Gas Bubbles in Neutron Irradiated U-10 wt% Mo Fuel

AU - Arivu, Maalavan

AU - Hoffman, Andrew

AU - Bachhav, Mukesh

AU - Aitkaliyeva, Assel

AU - Wu, Yaqiao

AU - Miller, Brandon

AU - Keiser, Dennis

AU - Gan, Jian

AU - Wen, Haiming

PY - 2024/6/15

Y1 - 2024/6/15

N2 - 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. A denuded zone was identified adjacent to a > 10 nm Xe gas bubble and a GB.

AB - 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. A denuded zone was identified adjacent to a > 10 nm Xe gas bubble and a GB.

UR - https://www.scopus.com/pages/publications/85189431847

UR - https://scholarworks.boisestate.edu/mse_facpubs/602

U2 - 10.1016/j.matlet.2024.136414

DO - 10.1016/j.matlet.2024.136414

M3 - Article

SN - 0167-577X

VL - 365

JO - Materials Letters

JF - Materials Letters

M1 - 136414

ER -

Atom Probe Tomography of Segregation at Grain Boundaries and Gas Bubbles in Neutron Irradiated U-10 wt% Mo Fuel

Abstract

EGS Disciplines

Access to Document

Other files and links

Fingerprint

Cite this