High temperature nanoindentation of iron: experimental and computational study

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High temperature nanoindentation of iron: experimental and computational study. / Khvan, Tymofii; Noels, L.; Terentyev, Dmitry; Dencker, F.; Stauffer, D.; Hangen, Ude D.; Van Renterghem, Wouter; Chang, Chih-Cheng; Zinovev, Aleksandr.

In: Journal of Nuclear Materials, 24.05.2022.

Research output: Contribution to journalArticlepeer-review

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Khvan T, Noels L, Terentyev D, Dencker F, Stauffer D, Hangen UD et al. High temperature nanoindentation of iron: experimental and computational study. Journal of Nuclear Materials. 2022 May 24. 153815. https://doi.org/10.1016/j.jnucmat.2022.153815

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@article{2edfefda22b04bd9b8edc9f428fad310,
title = "High temperature nanoindentation of iron: experimental and computational study",
abstract = "Application of reduced activation ferritic/martensitic (RAFM) steels as the structural material in future fusion reactors requires the knowledge of their mechanical properties under relevant operational conditions i.e. temperatures and irradiation by fast neutrons. Execution of the neutron irradiation and post irradiation examination is expensive and lengthy, therefore experimental and computational solutions to ease the characterization of as-irradiated materials are in the scope of interests of nuclear materials scientific community. Moreover, ion irradiation is considered as one possible way to surrogate high flux neutron irradiation damage. The extraction of the mechanical properties after ion irradiation primarily relies on the nanoindentation techniques and its subsequent post processing to extract engineering relevant information, although some innovative techniques such as compression micropillars and microtensile testing also exist. In this work, we have performed nanoindentation on BCC iron, as the basis material for ferritic steels, by using a new Bruker stage developed for high temperature operation. The obtained results were analyzed by means of crystal plasticity finite element method (CPFEM), whereas the constitutive laws of the material were derived and established by using tensile deformation data, thus providing an interconnection of material{\textquoteright}s behavior under compressive and tensile deformations. The microstructural features such as indentation pile-up formation or dislocation density evolution were obtained by using transmission and scanning electron microscopy, and were compared with the predictions derived by the developed CPFEM model. It is demonstrated that a good agreement between the CPFEM and experimental data set, including tensile and compressive loads as well as associated microstructural changes, is obtained at room temperature and elevated temperature tests.",
keywords = "High temperature, Nanoindentation, CPFEM, Iron SCK",
author = "Tymofii Khvan and L. Noels and Dmitry Terentyev and F. Dencker and D. Stauffer and Hangen, {Ude D.} and {Van Renterghem}, Wouter and Chih-Cheng Chang and Aleksandr Zinovev",
note = "Score=10",
year = "2022",
month = may,
day = "24",
doi = "10.1016/j.jnucmat.2022.153815",
language = "English",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

RIS - Download

TY - JOUR

T1 - High temperature nanoindentation of iron: experimental and computational study

AU - Khvan, Tymofii

AU - Noels, L.

AU - Terentyev, Dmitry

AU - Dencker, F.

AU - Stauffer, D.

AU - Hangen, Ude D.

AU - Van Renterghem, Wouter

AU - Chang, Chih-Cheng

AU - Zinovev, Aleksandr

N1 - Score=10

PY - 2022/5/24

Y1 - 2022/5/24

N2 - Application of reduced activation ferritic/martensitic (RAFM) steels as the structural material in future fusion reactors requires the knowledge of their mechanical properties under relevant operational conditions i.e. temperatures and irradiation by fast neutrons. Execution of the neutron irradiation and post irradiation examination is expensive and lengthy, therefore experimental and computational solutions to ease the characterization of as-irradiated materials are in the scope of interests of nuclear materials scientific community. Moreover, ion irradiation is considered as one possible way to surrogate high flux neutron irradiation damage. The extraction of the mechanical properties after ion irradiation primarily relies on the nanoindentation techniques and its subsequent post processing to extract engineering relevant information, although some innovative techniques such as compression micropillars and microtensile testing also exist. In this work, we have performed nanoindentation on BCC iron, as the basis material for ferritic steels, by using a new Bruker stage developed for high temperature operation. The obtained results were analyzed by means of crystal plasticity finite element method (CPFEM), whereas the constitutive laws of the material were derived and established by using tensile deformation data, thus providing an interconnection of material’s behavior under compressive and tensile deformations. The microstructural features such as indentation pile-up formation or dislocation density evolution were obtained by using transmission and scanning electron microscopy, and were compared with the predictions derived by the developed CPFEM model. It is demonstrated that a good agreement between the CPFEM and experimental data set, including tensile and compressive loads as well as associated microstructural changes, is obtained at room temperature and elevated temperature tests.

AB - Application of reduced activation ferritic/martensitic (RAFM) steels as the structural material in future fusion reactors requires the knowledge of their mechanical properties under relevant operational conditions i.e. temperatures and irradiation by fast neutrons. Execution of the neutron irradiation and post irradiation examination is expensive and lengthy, therefore experimental and computational solutions to ease the characterization of as-irradiated materials are in the scope of interests of nuclear materials scientific community. Moreover, ion irradiation is considered as one possible way to surrogate high flux neutron irradiation damage. The extraction of the mechanical properties after ion irradiation primarily relies on the nanoindentation techniques and its subsequent post processing to extract engineering relevant information, although some innovative techniques such as compression micropillars and microtensile testing also exist. In this work, we have performed nanoindentation on BCC iron, as the basis material for ferritic steels, by using a new Bruker stage developed for high temperature operation. The obtained results were analyzed by means of crystal plasticity finite element method (CPFEM), whereas the constitutive laws of the material were derived and established by using tensile deformation data, thus providing an interconnection of material’s behavior under compressive and tensile deformations. The microstructural features such as indentation pile-up formation or dislocation density evolution were obtained by using transmission and scanning electron microscopy, and were compared with the predictions derived by the developed CPFEM model. It is demonstrated that a good agreement between the CPFEM and experimental data set, including tensile and compressive loads as well as associated microstructural changes, is obtained at room temperature and elevated temperature tests.

KW - High temperature

KW - Nanoindentation

KW - CPFEM

KW - Iron SCK

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/49359576

U2 - 10.1016/j.jnucmat.2022.153815

DO - 10.1016/j.jnucmat.2022.153815

M3 - Article

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

M1 - 153815

ER -

ID: 7687287