Development of a semi-empirical approach correlating ion- and neutron-induced hardening in Eurofer97 using nanoindentation and crystal plasticity finite element method
Nanoindentation; Ion irradiation; Finite element method; Crystal plasticity; Irradiation hardening
Abstract :
[en] An experimentally-based computational methodology is developed to predict the irradiation hardening in materials for nuclear applications, aimed at avoiding neutron irradiation. The results are expected to accelerate the delivery of new research data in nuclear materials science by reducing the time, costs, and resources necessary for neutron irradiation. The effect of ion irradiation on nanohardness is measured with nanoindentation and computationally replicated on the basis of the tensile tests data from neutron-irradiated specimens. Thus, the established procedure aims to interconnect two important phenomena: the effect of ion vs. neutron irradiations on mechanical properties; and the nanocompressive vs. macrotensile deformation. The accuracy of the outcoming results is discussed. The tests performed are used to establish and validate a crystal plasticity finite element method model of irradiated Eurofer97 steel. The constitutive material law is modified with respect to the hardening caused by the neutron irradiation dose and is used to feed the crystal plasticity finite element method model of the nanoindentation process. This consequently allows one to accurately reproduce the experimental hardness–depth values obtained from the ion-irradiated specimen. Eventually, a basic proof of concept is provided, which can be further refined for the prediction of neutron-induced hardening, while working only with ion-irradiated material.
Research Center/Unit :
A&M - Aérospatiale et Mécanique - ULiège
Disciplines :
Materials science & engineering
Author, co-author :
Khvan, Tymofii ; Université de Liège - ULiège > Aérospatiale et Mécanique (A&M)
Noels, Ludovic ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Terentyev, Dmitry
Corniani, Enrico
Hähner, Peter
Chang, Chih-Cheng
Language :
English
Title :
Development of a semi-empirical approach correlating ion- and neutron-induced hardening in Eurofer97 using nanoindentation and crystal plasticity finite element method
HE - 101052200 - EUROfusion - Implementation of activities described in the Roadmap to Fusion during Horizon Europe through a joint programme of the members of the EUROfusion consortium H2020 - 945339 - POLONEZ BIS - Postdoctoral Fellowships in Poland to Boost International Mobility and Skills Training
Name of the research project :
EUROfusion
Funders :
European Union. Marie Skłodowska-Curie Actions EU - European Union
Funding number :
945339; 101052200
Funding text :
This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 — EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them.
The experimental data used in this research were collected through access to the Micro-Characterisation Laboratory (MCL) under the framework of Open Access to the Joint Research Centre Physical Research Infrastructures of the European Commission (Project NIFEM, Research Infrastructure Access Agreement N°2020-1-RD-EMMA-MCL-36044-1).
This research is part of the project No. 2022/47/P/ST5/01169 co-funded by the National Science Centre and the European Union Framework Programme for Research and Innovation Horizon 2020 under the Marie Skłodowska-Curie grant agreement No. 945339. For the purpose of Open Access, the author has applied a CC-BY public copyright license to any Author Accepted Manuscript (AAM) version arising from this submission. The publication was created within the framework of the project of the Minister of Science and Higher Education ”Support for the activities of Centres of Excellence established in Poland under Horizon 2020” under contract no. MEiN/2023/DIR/3795. We also acknowledge support from the European Union Horizon 2020 research and innovation program under grant agreement no. 857470, the European Regional Development Fund via the Foundation for Polish Science International Research Agenda PLUS program grant No. MAB PLUS/2018/8.
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