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Title: Effect of stress evolution on microstructural behavior in U-Mo/Al dispersion fuel [Effect of stress on microstructural evolution in U-Mo/Al dispersion fuel]

Abstract

U-Mo/Al dispersion fuel irradiated to high burnup at high power (high fission rate) exhibited microstructural changes such as deformation of the fuel particles, pore growth, and rupture of the Al matrix. The driving force for these microstructural changes was meat swelling caused by a combination of fuel particle swelling and interaction layer growth. Five miniplates with well-recorded fabrication data and irradiation conditions were selected, and their PIE data was analyzed. ABAQUS finite element analysis (FEA) was utilized to simulate the microstructural evolution of the plates. Using the simulation results shear stress, effective stress and hydrostatic stress exerted on both the fuel particles and the Al matrix were determined. The effects of fabrication and irradiation variables on stress-induced microstructural evolutions, such as pore growth in the interaction layers and Al matrix rupture, were investigated. The observed microstructural changes were consistent with the calculated stress distribution in the meat.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [2];  [3];  [4];  [1]
  1. Ulsan National Institute of Science and Technology, Ulsan (Republic of Korea)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  4. Korea Atomic Energy Research Institute, Daejeon (Republic of Korea)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1373747
Alternate Identifier(s):
OSTI ID: 1396894
Grant/Contract Number:  
AC02-06CH11357; AC-02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 487; Journal Issue: C; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; FEA simulation; U-Mo dispersion fuel; meat swelling; mechanical analysis; microstructural evolution

Citation Formats

Jeong, G. Y., Kim, Yeon Soo, Jamison, L. M., Robinson, A. B., Lee, K. H., and Sohn, Dong -Seong. Effect of stress evolution on microstructural behavior in U-Mo/Al dispersion fuel [Effect of stress on microstructural evolution in U-Mo/Al dispersion fuel]. United States: N. p., 2017. Web. doi:10.1016/j.jnucmat.2017.02.023.
Jeong, G. Y., Kim, Yeon Soo, Jamison, L. M., Robinson, A. B., Lee, K. H., & Sohn, Dong -Seong. Effect of stress evolution on microstructural behavior in U-Mo/Al dispersion fuel [Effect of stress on microstructural evolution in U-Mo/Al dispersion fuel]. United States. doi:10.1016/j.jnucmat.2017.02.023.
Jeong, G. Y., Kim, Yeon Soo, Jamison, L. M., Robinson, A. B., Lee, K. H., and Sohn, Dong -Seong. Mon . "Effect of stress evolution on microstructural behavior in U-Mo/Al dispersion fuel [Effect of stress on microstructural evolution in U-Mo/Al dispersion fuel]". United States. doi:10.1016/j.jnucmat.2017.02.023. https://www.osti.gov/servlets/purl/1373747.
@article{osti_1373747,
title = {Effect of stress evolution on microstructural behavior in U-Mo/Al dispersion fuel [Effect of stress on microstructural evolution in U-Mo/Al dispersion fuel]},
author = {Jeong, G. Y. and Kim, Yeon Soo and Jamison, L. M. and Robinson, A. B. and Lee, K. H. and Sohn, Dong -Seong},
abstractNote = {U-Mo/Al dispersion fuel irradiated to high burnup at high power (high fission rate) exhibited microstructural changes such as deformation of the fuel particles, pore growth, and rupture of the Al matrix. The driving force for these microstructural changes was meat swelling caused by a combination of fuel particle swelling and interaction layer growth. Five miniplates with well-recorded fabrication data and irradiation conditions were selected, and their PIE data was analyzed. ABAQUS finite element analysis (FEA) was utilized to simulate the microstructural evolution of the plates. Using the simulation results shear stress, effective stress and hydrostatic stress exerted on both the fuel particles and the Al matrix were determined. The effects of fabrication and irradiation variables on stress-induced microstructural evolutions, such as pore growth in the interaction layers and Al matrix rupture, were investigated. The observed microstructural changes were consistent with the calculated stress distribution in the meat.},
doi = {10.1016/j.jnucmat.2017.02.023},
journal = {Journal of Nuclear Materials},
number = C,
volume = 487,
place = {United States},
year = {Mon Feb 20 00:00:00 EST 2017},
month = {Mon Feb 20 00:00:00 EST 2017}
}

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