Modeling copper precipitation hardening and embrittlement in a dilute Fe-0.3at.%Cu alloy under neutron irradiation
Abstract
The neutron irradiation in light water reactors can induce precipitation of nanometer sized Cu clusters in reactor pressure vessel steels. The Cu precipitates impede dislocation gliding, leading to increase of yield strength (hardening) and upward shift of ductile-to-brittle transition temperature (embrittlement). In this work, cluster dynamics modeling is used to model the entire Cu precipitation process (nucleation, growth, and coarsening) in a Fe-0.3at.%Cu alloy under neutron irradiation at 300 °C. The evolution of the Cu cluster number density and mean radius predicted by the modeling agrees well with experimental data reported in literature for the same alloy under the same irradiation conditions. The predicted precipitation kinetics are used as input for a dispersed barrier hardening model to correlate the microstructural evolution with the radiation hardening and embrittlement in this alloy. The predicted radiation hardening agrees well with the mechanical test results in literature. In conclusion, the limitation of the model and future improvement directions are also discussed in this work.
- Authors:
-
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Univ. of Wisconsin - Madison, Madison, WI (United States)
- 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)
- OSTI Identifier:
- 1473963
- Report Number(s):
- INL/JOU-17-42045-Rev000
Journal ID: ISSN 0022-3115
- Grant/Contract Number:
- AC07-05ID14517
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Nuclear Materials
- Additional Journal Information:
- Journal Volume: 495; Journal Issue: C; Journal ID: ISSN 0022-3115
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 97 MATHEMATICS AND COMPUTING; 22 GENERAL STUDIES OF NUCLEAR REACTORS; precipitation; cluster dynamics; reactor pressure vessel
Citation Formats
Bai, Xian -Ming, Ke, Huibin, Zhang, Yongfeng, and Spencer, Benjamin W. Modeling copper precipitation hardening and embrittlement in a dilute Fe-0.3at.%Cu alloy under neutron irradiation. United States: N. p., 2017.
Web. doi:10.1016/j.jnucmat.2017.08.042.
Bai, Xian -Ming, Ke, Huibin, Zhang, Yongfeng, & Spencer, Benjamin W. Modeling copper precipitation hardening and embrittlement in a dilute Fe-0.3at.%Cu alloy under neutron irradiation. United States. https://doi.org/10.1016/j.jnucmat.2017.08.042
Bai, Xian -Ming, Ke, Huibin, Zhang, Yongfeng, and Spencer, Benjamin W. Mon .
"Modeling copper precipitation hardening and embrittlement in a dilute Fe-0.3at.%Cu alloy under neutron irradiation". United States. https://doi.org/10.1016/j.jnucmat.2017.08.042. https://www.osti.gov/servlets/purl/1473963.
@article{osti_1473963,
title = {Modeling copper precipitation hardening and embrittlement in a dilute Fe-0.3at.%Cu alloy under neutron irradiation},
author = {Bai, Xian -Ming and Ke, Huibin and Zhang, Yongfeng and Spencer, Benjamin W.},
abstractNote = {The neutron irradiation in light water reactors can induce precipitation of nanometer sized Cu clusters in reactor pressure vessel steels. The Cu precipitates impede dislocation gliding, leading to increase of yield strength (hardening) and upward shift of ductile-to-brittle transition temperature (embrittlement). In this work, cluster dynamics modeling is used to model the entire Cu precipitation process (nucleation, growth, and coarsening) in a Fe-0.3at.%Cu alloy under neutron irradiation at 300 °C. The evolution of the Cu cluster number density and mean radius predicted by the modeling agrees well with experimental data reported in literature for the same alloy under the same irradiation conditions. The predicted precipitation kinetics are used as input for a dispersed barrier hardening model to correlate the microstructural evolution with the radiation hardening and embrittlement in this alloy. The predicted radiation hardening agrees well with the mechanical test results in literature. In conclusion, the limitation of the model and future improvement directions are also discussed in this work.},
doi = {10.1016/j.jnucmat.2017.08.042},
journal = {Journal of Nuclear Materials},
number = C,
volume = 495,
place = {United States},
year = {Mon Sep 04 00:00:00 EDT 2017},
month = {Mon Sep 04 00:00:00 EDT 2017}
}
Web of Science
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