TY - JOUR
T1 - High temperature mechanical properties of fluorite crystal structured materials (CeO2, ThO2, and UO2) and advanced accident tolerant fuels (U3Si2, UN, and UB2)
AU - Frazer, D.
AU - Maiorov, B.
AU - Carvajal-Nuñez, U.
AU - Evans, J.
AU - Kardoulaki, E.
AU - Dunwoody, J.
AU - Saleh, T. A.
AU - White, J. T.
N1 - Funding Information:
The support of the U.S. Department of Energy, Office of Nuclear Energy Nuclear Technology Research and Development program is gratefully acknowledged. D. Frazer acknowledges the support of the Seaborg Institute through a LANL Seaborg postdoctoral fellowship. Work done by BM was supported as part of the Materials Science of Actinides, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No. DE-SC0001089 . This work was per- formed at Los Alamos National Laboratory which is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under contract number 89233218CNA0 0 0 0 01 .
Publisher Copyright:
© 2021
PY - 2021/10
Y1 - 2021/10
N2 - The mechanical interaction between the fuel and cladding that occurs during operation of a nuclear reactor is important to understand as it can lead to cladding failures and release of radioactive material into the coolant. In order to develop better models of the pellet-clad mechanical interactions, the mechanical properties of the fuel at relevant operating temperatures, like the elastic moduli, are needed for current and advanced accident tolerant fuels (ATFs). In this work, elevated temperature nanoindentation and resonant ultrasound spectroscopy were used to measure the moduli and hardness of several fluorite materials (CeO2, ThO2, UO2) and several ATF candidates (ATF) (U3Si2, UN, UB2). In addition, a comparison of the two techniques was performed in this study to independently validate the mechanical properties.
AB - The mechanical interaction between the fuel and cladding that occurs during operation of a nuclear reactor is important to understand as it can lead to cladding failures and release of radioactive material into the coolant. In order to develop better models of the pellet-clad mechanical interactions, the mechanical properties of the fuel at relevant operating temperatures, like the elastic moduli, are needed for current and advanced accident tolerant fuels (ATFs). In this work, elevated temperature nanoindentation and resonant ultrasound spectroscopy were used to measure the moduli and hardness of several fluorite materials (CeO2, ThO2, UO2) and several ATF candidates (ATF) (U3Si2, UN, UB2). In addition, a comparison of the two techniques was performed in this study to independently validate the mechanical properties.
KW - Accident tolerant fuels
KW - Elastic constants
KW - High temperature nanoindentation
KW - Mechanical properties
KW - Resonant ultrasound spectroscopy
UR - https://www.scopus.com/pages/publications/85107404319
UR - https://www.mendeley.com/catalogue/3f2d3a87-68b6-3452-a153-84402497a5c5/
U2 - 10.1016/j.jnucmat.2021.153035
DO - 10.1016/j.jnucmat.2021.153035
M3 - Article
AN - SCOPUS:85107404319
SN - 0022-3115
VL - 554
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
M1 - 153035
ER -