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

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  • Peking University

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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.

Details

Original languageEnglish
Pages (from-to)312-315
JournalJournal of Nuclear Materials
Volume466
DOIs
StatePublished - 23 Aug 2015

Keywords

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

ID: 3751518