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Title: Young's modulus evaluation of high burnup structure in UO2 with nanometer resolution

Abstract

The mechanical properties of a well-characterized irradiated light water reactor fuel pin with an average burnup of 72 MWd/kgU were investigated by utilizing nano-indentation technique. Young's modulus and hardness are reported as functions of radial positions covering from mid radial position in the urania pellet to high burnup structure, fuel-cladding chemical interaction zone and zirconium-based cladding. Here, by probing microstructure of the high burnup zone, the mechanical properties of sub-grains and the interaction between them were examined at the nanometer scale. Force-displacement curves from each of these individual sub-grains suggest they resemble single crystal UO2. However, these restructured grains are weakly bonded to their neighbors.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1764494
Alternate Identifier(s):
OSTI ID: 1526073
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 508; Journal Issue: -; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; Elastic modulus; Hardness; Nano-indentation; High burnup fuel

Citation Formats

Terrani, Kurt A., Balooch, Mehdi, Burns, Joseph R., and Smith, Quinlan B. Young's modulus evaluation of high burnup structure in UO2 with nanometer resolution. United States: N. p., 2018. Web. doi:10.1016/j.jnucmat.2018.04.004.
Terrani, Kurt A., Balooch, Mehdi, Burns, Joseph R., & Smith, Quinlan B. Young's modulus evaluation of high burnup structure in UO2 with nanometer resolution. United States. doi:https://doi.org/10.1016/j.jnucmat.2018.04.004
Terrani, Kurt A., Balooch, Mehdi, Burns, Joseph R., and Smith, Quinlan B. Tue . "Young's modulus evaluation of high burnup structure in UO2 with nanometer resolution". United States. doi:https://doi.org/10.1016/j.jnucmat.2018.04.004. https://www.osti.gov/servlets/purl/1764494.
@article{osti_1764494,
title = {Young's modulus evaluation of high burnup structure in UO2 with nanometer resolution},
author = {Terrani, Kurt A. and Balooch, Mehdi and Burns, Joseph R. and Smith, Quinlan B.},
abstractNote = {The mechanical properties of a well-characterized irradiated light water reactor fuel pin with an average burnup of 72 MWd/kgU were investigated by utilizing nano-indentation technique. Young's modulus and hardness are reported as functions of radial positions covering from mid radial position in the urania pellet to high burnup structure, fuel-cladding chemical interaction zone and zirconium-based cladding. Here, by probing microstructure of the high burnup zone, the mechanical properties of sub-grains and the interaction between them were examined at the nanometer scale. Force-displacement curves from each of these individual sub-grains suggest they resemble single crystal UO2. However, these restructured grains are weakly bonded to their neighbors.},
doi = {10.1016/j.jnucmat.2018.04.004},
journal = {Journal of Nuclear Materials},
number = -,
volume = 508,
place = {United States},
year = {2018},
month = {4}
}

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Cited by: 7 works
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