Modelling irradiation-induced softening in BCC iron by crystal plasticity approach

Xiazi Xiao; Dmitry Terentyev; Long Yu; D. Song; Alexander Bakaev; Huiling Duan

doi:10.1016/j.jnucmat.2015.08.017

Modelling irradiation-induced softening in BCC iron by crystal plasticity approach

Xiazi Xiao, Dmitry Terentyev, Long Yu, D. Song, Alexander Bakaev, Huiling Duan

Research output › peer-review

Abstract

Crystal plasticity model (CPM) for BCC iron to account for radiation-induced strain softening is proposed. CPM is based on the plastically-driven and thermally-activated removal of dislocation loops. Atomistic simulations are applied to parameterize dislocation-defect interactions. Combining experimental microstructures, defect-hardening/absorption rules from atomistic simulations, and CPM fitted to properties of non-irradiated iron, the model achieves a good agreement with experimental data regarding radiation-induced strain softening and flow stress increase under neutron irradiation. © 2015 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	312-315
Journal	Journal of Nuclear Materials
Volume	466
DOIs	https://doi.org/10.1016/j.jnucmat.2015.08.017
State	Published - 23 Aug 2015

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10.1016/j.jnucmat.2015.08.017

Cite this

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title = "Modelling irradiation-induced softening in BCC iron by crystal plasticity approach",

abstract = "Crystal plasticity model (CPM) for BCC iron to account for radiation-induced strain softening is proposed. CPM is based on the plastically-driven and thermally-activated removal of dislocation loops. Atomistic simulations are applied to parameterize dislocation-defect interactions. Combining experimental microstructures, defect-hardening/absorption rules from atomistic simulations, and CPM fitted to properties of non-irradiated iron, the model achieves a good agreement with experimental data regarding radiation-induced strain softening and flow stress increase under neutron irradiation. {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

keywords = "Atomistic simulations, Crystal plasticity, Crystal plasticity models, Dislocation defects, Dislocation loop, Radiation-induced, Stress increase, Thermally activated",

author = "Xiazi Xiao and Dmitry Terentyev and Long Yu and D. Song and Alexander Bakaev and Huiling Duan",

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AU - Xiao, Xiazi

AU - Terentyev, Dmitry

AU - Yu, Long

AU - Song, D.

AU - Bakaev, Alexander

AU - Duan, Huiling

N1 - Score=10

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N2 - Crystal plasticity model (CPM) for BCC iron to account for radiation-induced strain softening is proposed. CPM is based on the plastically-driven and thermally-activated removal of dislocation loops. Atomistic simulations are applied to parameterize dislocation-defect interactions. Combining experimental microstructures, defect-hardening/absorption rules from atomistic simulations, and CPM fitted to properties of non-irradiated iron, the model achieves a good agreement with experimental data regarding radiation-induced strain softening and flow stress increase under neutron irradiation. © 2015 Elsevier B.V. All rights reserved.

AB - Crystal plasticity model (CPM) for BCC iron to account for radiation-induced strain softening is proposed. CPM is based on the plastically-driven and thermally-activated removal of dislocation loops. Atomistic simulations are applied to parameterize dislocation-defect interactions. Combining experimental microstructures, defect-hardening/absorption rules from atomistic simulations, and CPM fitted to properties of non-irradiated iron, the model achieves a good agreement with experimental data regarding radiation-induced strain softening and flow stress increase under neutron irradiation. © 2015 Elsevier B.V. All rights reserved.

KW - Atomistic simulations

KW - Crystal plasticity

KW - Crystal plasticity models

KW - Dislocation defects

KW - Dislocation loop

KW - Radiation-induced

KW - Stress increase

KW - Thermally activated

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DO - 10.1016/j.jnucmat.2015.08.017

M3 - Article

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

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