Predicting neutron damage using TEM with in situ ion irradiation and computer modeling
Abstract
We have constructed a computer model of irradiation defect production closely coordinated with TEM and in situ ion irradiation of Molybdenum at 80 degrees C over a range of dose, dose rate and foil thickness. We have reexamined our previous ion irradiation data to assign appropriate error and uncertainty based on more recent work. The spatially dependent cascade cluster dynamics model is updated with recent Molecular Dynamics results for cascades in Mo. After a careful assignment of both ion and neutron irradiation dose values in dpa, TEM data are compared for both ion and neutron irradiated Mo from the same source material. Using the computer model of defect formation and evolution based on the in situ ion irradiation of thin foils, the defect microstructure, consisting of densities and sizes of dislocation loops, is predicted for neutron irradiation of bulk material at 80 degrees C and compared with experiment. Reasonable agreement between model prediction and experimental data demonstrates a promising direction in understanding and predicting neutron damage using a closely coordinated program of in situ ion irradiation experiment and computer simulation.
- Authors:
-
[3]
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Oregon State Univ., Corvallis, OR (United States)
- Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy; USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1481738
- Alternate Identifier(s):
- OSTI ID: 1549471
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Nuclear Materials
- Additional Journal Information:
- Journal Volume: 498; Journal Issue: C; Journal ID: ISSN 0022-3115
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; Computer modeling; In situ ion irradiation; Neutron irradiation; Predicted dislocation loop density and sizes; TEM
Citation Formats
Kirk, Marquis A., Li, Meimei, Xu, Donghua, and Wirth, Brian D. Predicting neutron damage using TEM with in situ ion irradiation and computer modeling. United States: N. p., 2017.
Web. doi:10.1016/j.jnucmat.2017.10.023.
Kirk, Marquis A., Li, Meimei, Xu, Donghua, & Wirth, Brian D. Predicting neutron damage using TEM with in situ ion irradiation and computer modeling. United States. https://doi.org/10.1016/j.jnucmat.2017.10.023
Kirk, Marquis A., Li, Meimei, Xu, Donghua, and Wirth, Brian D. Thu .
"Predicting neutron damage using TEM with in situ ion irradiation and computer modeling". United States. https://doi.org/10.1016/j.jnucmat.2017.10.023. https://www.osti.gov/servlets/purl/1481738.
@article{osti_1481738,
title = {Predicting neutron damage using TEM with in situ ion irradiation and computer modeling},
author = {Kirk, Marquis A. and Li, Meimei and Xu, Donghua and Wirth, Brian D.},
abstractNote = {We have constructed a computer model of irradiation defect production closely coordinated with TEM and in situ ion irradiation of Molybdenum at 80 degrees C over a range of dose, dose rate and foil thickness. We have reexamined our previous ion irradiation data to assign appropriate error and uncertainty based on more recent work. The spatially dependent cascade cluster dynamics model is updated with recent Molecular Dynamics results for cascades in Mo. After a careful assignment of both ion and neutron irradiation dose values in dpa, TEM data are compared for both ion and neutron irradiated Mo from the same source material. Using the computer model of defect formation and evolution based on the in situ ion irradiation of thin foils, the defect microstructure, consisting of densities and sizes of dislocation loops, is predicted for neutron irradiation of bulk material at 80 degrees C and compared with experiment. Reasonable agreement between model prediction and experimental data demonstrates a promising direction in understanding and predicting neutron damage using a closely coordinated program of in situ ion irradiation experiment and computer simulation.},
doi = {10.1016/j.jnucmat.2017.10.023},
journal = {Journal of Nuclear Materials},
number = C,
volume = 498,
place = {United States},
year = {Thu Oct 12 00:00:00 EDT 2017},
month = {Thu Oct 12 00:00:00 EDT 2017}
}
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Works referencing / citing this record:
Effect of precipitates on high-temperature strength and irradiation behavior of vanadium-based alloys
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