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Title: 3-D reconstruction and microstructural characterization of neutron-irradiated U-10Zr fuel using FIB-SEM serial sectioning

Abstract

Herein, focused ion beam-scanning electron microscopy serial sectioning was applied to characterize the three-dimensional (3-D) porosity and phase regions of a neutron-irradiated U-10 wt% Zr fuel. The specimen was removed from an intermediate radial region of a fuel pin irradiated to 5.7 at.% burn-up. Backscattered electron imaging and energy-dispersive spectroscopy were performed on each serial section, allowing for the characterization of microstructural morphology and composition. Porosity size followed a lognormal distribution, ranging from 1.46 × 10–4 to 25.58 µm3 with a total porosity volume fraction of 13.02%. Distinctive microstructural regions were identified by composition and porosity: (1) a Zr-rich region with an average composition of 28.4 wt% Zr and a local porosity fraction of 6.88%, and (2) a U-rich region with an average composition of 97.0 wt% U and a local porosity fraction of 14.11%; subdivided into U-rich—high porosity (16.68%) and U-rich—low porosity (8.04%) regions. The detailed 3-D compositional and porosity regions can improve nuclear fuel performance codes.

Authors:
 [1];  [2]; ORCiD logo [3]; ORCiD logo [1]
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE); US Department of State; Dominican Republic Education Ministry
OSTI Identifier:
1958616
Report Number(s):
INL/JOU-23-71232-Rev000
Journal ID: ISSN 2059-8521; TRN: US2312734
Grant/Contract Number:  
AC07-05ID14517; GNT-20212273
Resource Type:
Accepted Manuscript
Journal Name:
MRS Advances
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2059-8521
Publisher:
Springer Nature
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; FIB

Citation Formats

Rodríguez Pérez, Nicole, Thomas, Jonova, Murray, Daniel, and Okuniewski, Maria A. 3-D reconstruction and microstructural characterization of neutron-irradiated U-10Zr fuel using FIB-SEM serial sectioning. United States: N. p., 2023. Web. doi:10.1557/s43580-022-00464-3.
Rodríguez Pérez, Nicole, Thomas, Jonova, Murray, Daniel, & Okuniewski, Maria A. 3-D reconstruction and microstructural characterization of neutron-irradiated U-10Zr fuel using FIB-SEM serial sectioning. United States. https://doi.org/10.1557/s43580-022-00464-3
Rodríguez Pérez, Nicole, Thomas, Jonova, Murray, Daniel, and Okuniewski, Maria A. Tue . "3-D reconstruction and microstructural characterization of neutron-irradiated U-10Zr fuel using FIB-SEM serial sectioning". United States. https://doi.org/10.1557/s43580-022-00464-3. https://www.osti.gov/servlets/purl/1958616.
@article{osti_1958616,
title = {3-D reconstruction and microstructural characterization of neutron-irradiated U-10Zr fuel using FIB-SEM serial sectioning},
author = {Rodríguez Pérez, Nicole and Thomas, Jonova and Murray, Daniel and Okuniewski, Maria A.},
abstractNote = {Herein, focused ion beam-scanning electron microscopy serial sectioning was applied to characterize the three-dimensional (3-D) porosity and phase regions of a neutron-irradiated U-10 wt% Zr fuel. The specimen was removed from an intermediate radial region of a fuel pin irradiated to 5.7 at.% burn-up. Backscattered electron imaging and energy-dispersive spectroscopy were performed on each serial section, allowing for the characterization of microstructural morphology and composition. Porosity size followed a lognormal distribution, ranging from 1.46 × 10–4 to 25.58 µm3 with a total porosity volume fraction of 13.02%. Distinctive microstructural regions were identified by composition and porosity: (1) a Zr-rich region with an average composition of 28.4 wt% Zr and a local porosity fraction of 6.88%, and (2) a U-rich region with an average composition of 97.0 wt% U and a local porosity fraction of 14.11%; subdivided into U-rich—high porosity (16.68%) and U-rich—low porosity (8.04%) regions. The detailed 3-D compositional and porosity regions can improve nuclear fuel performance codes.},
doi = {10.1557/s43580-022-00464-3},
journal = {MRS Advances},
number = 1,
volume = 8,
place = {United States},
year = {Tue Jan 03 00:00:00 EST 2023},
month = {Tue Jan 03 00:00:00 EST 2023}
}

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