Examining deformation localization of irradiated tungsten under uniaxial compression with crystal plasticity
Abstract
In this work, the deformation behavior of irradiated tungsten at elevated service temperatures is examined using mechanism-based crystal plasticity finite element framework by considering multiple mechanisms, including thermal softening and irradiation hardening. The previously developed mechanism-based crystal plasticity model is first utilized to assess the yield stress of unirradiated and irradiated tungsten upon low-temperature irradiation. Additionally, the engineering stress-strain response under uniaxial compression is then predicted by considering the effect of irradiation-induced defect clusters on the motion of deformation-induced dislocations, and the predicted results agree well with the experimental measurements. More importantly, the formation and evolution of plastic strain localization zones in the form of shear bands are qualitatively captured, and the maximal principal strain distribution is quantitatively linked to the dose of irradiation damage. Finally, the deformation-induced shear band as a result of plastic instability in the compressed tungsten specimen is discussed.
- Authors:
-
- Dalian Univ. of Technology (China). Key Lab. of Materials Modification by Laser, Ion and Electron Beams
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1813140
- Grant/Contract Number:
- AC05-00OR22725; 2018YFE0308100; 2018YFE0308105; 11905025
- Resource Type:
- Accepted Manuscript
- Journal Name:
- International Journal of Refractory and Hard Metals
- Additional Journal Information:
- Journal Volume: 100; Journal Issue: -; Journal ID: ISSN 0263-4368
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; irradiation damage; defect clusters; strain localization; compression; finite element
Citation Formats
Wang, Yuanyuan, Sun, Xin, and Zhao, Jijun. Examining deformation localization of irradiated tungsten under uniaxial compression with crystal plasticity. United States: N. p., 2021.
Web. doi:10.1016/j.ijrmhm.2021.105637.
Wang, Yuanyuan, Sun, Xin, & Zhao, Jijun. Examining deformation localization of irradiated tungsten under uniaxial compression with crystal plasticity. United States. https://doi.org/10.1016/j.ijrmhm.2021.105637
Wang, Yuanyuan, Sun, Xin, and Zhao, Jijun. Mon .
"Examining deformation localization of irradiated tungsten under uniaxial compression with crystal plasticity". United States. https://doi.org/10.1016/j.ijrmhm.2021.105637. https://www.osti.gov/servlets/purl/1813140.
@article{osti_1813140,
title = {Examining deformation localization of irradiated tungsten under uniaxial compression with crystal plasticity},
author = {Wang, Yuanyuan and Sun, Xin and Zhao, Jijun},
abstractNote = {In this work, the deformation behavior of irradiated tungsten at elevated service temperatures is examined using mechanism-based crystal plasticity finite element framework by considering multiple mechanisms, including thermal softening and irradiation hardening. The previously developed mechanism-based crystal plasticity model is first utilized to assess the yield stress of unirradiated and irradiated tungsten upon low-temperature irradiation. Additionally, the engineering stress-strain response under uniaxial compression is then predicted by considering the effect of irradiation-induced defect clusters on the motion of deformation-induced dislocations, and the predicted results agree well with the experimental measurements. More importantly, the formation and evolution of plastic strain localization zones in the form of shear bands are qualitatively captured, and the maximal principal strain distribution is quantitatively linked to the dose of irradiation damage. Finally, the deformation-induced shear band as a result of plastic instability in the compressed tungsten specimen is discussed.},
doi = {10.1016/j.ijrmhm.2021.105637},
journal = {International Journal of Refractory and Hard Metals},
number = -,
volume = 100,
place = {United States},
year = {Mon Jul 19 00:00:00 EDT 2021},
month = {Mon Jul 19 00:00:00 EDT 2021}
}
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