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Title: Modeling defect cluster evolution in irradiated structural materials: Focus on comparing to high-resolution experimental characterization studies

Abstract

Exposure of metallic structural materials to irradiation environments results in significant microstructural evolution, property changes, and performance degradation, which limits the extended operation of current generation light water reactors and restricts the design of advanced fission and fusion reactors. Further, it is well recognized that these irradiation effects are a classic example of inherently multiscale phenomena and that the mix of radiation-induced features formed and the corresponding property degradation depend on a wide range of material and irradiation variables. This inherently multiscale evolution emphasizes the importance of closely integrating models with high-resolution experimental characterization of the evolving radiation-damaged microstructure. Lastly, this article provides a review of recent models of the defect microstructure evolution in irradiated body-centered cubic materials, which provide good agreement with experimental measurements, and presents some outstanding challenges, which will require coordinated high-resolution characterization and modeling to resolve.

Authors:
 [1];  [1];  [2];  [2]
  1. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1265497
Grant/Contract Number:  
AC05-00OR22725; SC0006661
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Research
Additional Journal Information:
Journal Volume: 30; Journal Issue: 09; Journal ID: ISSN 0884-2914
Publisher:
Materials Research Society
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; defects; nuclear materials; radiation effects

Citation Formats

Wirth, Brian D., Hu, Xunxiang, Kohnert, Aaron, and Xu, Donghua. Modeling defect cluster evolution in irradiated structural materials: Focus on comparing to high-resolution experimental characterization studies. United States: N. p., 2015. Web. doi:10.1557/jmr.2015.25.
Wirth, Brian D., Hu, Xunxiang, Kohnert, Aaron, & Xu, Donghua. Modeling defect cluster evolution in irradiated structural materials: Focus on comparing to high-resolution experimental characterization studies. United States. https://doi.org/10.1557/jmr.2015.25
Wirth, Brian D., Hu, Xunxiang, Kohnert, Aaron, and Xu, Donghua. Mon . "Modeling defect cluster evolution in irradiated structural materials: Focus on comparing to high-resolution experimental characterization studies". United States. https://doi.org/10.1557/jmr.2015.25. https://www.osti.gov/servlets/purl/1265497.
@article{osti_1265497,
title = {Modeling defect cluster evolution in irradiated structural materials: Focus on comparing to high-resolution experimental characterization studies},
author = {Wirth, Brian D. and Hu, Xunxiang and Kohnert, Aaron and Xu, Donghua},
abstractNote = {Exposure of metallic structural materials to irradiation environments results in significant microstructural evolution, property changes, and performance degradation, which limits the extended operation of current generation light water reactors and restricts the design of advanced fission and fusion reactors. Further, it is well recognized that these irradiation effects are a classic example of inherently multiscale phenomena and that the mix of radiation-induced features formed and the corresponding property degradation depend on a wide range of material and irradiation variables. This inherently multiscale evolution emphasizes the importance of closely integrating models with high-resolution experimental characterization of the evolving radiation-damaged microstructure. Lastly, this article provides a review of recent models of the defect microstructure evolution in irradiated body-centered cubic materials, which provide good agreement with experimental measurements, and presents some outstanding challenges, which will require coordinated high-resolution characterization and modeling to resolve.},
doi = {10.1557/jmr.2015.25},
journal = {Journal of Materials Research},
number = 09,
volume = 30,
place = {United States},
year = {Mon Mar 02 00:00:00 EST 2015},
month = {Mon Mar 02 00:00:00 EST 2015}
}

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