Application of sub-miniaturized bending tests to extract tensile properties from neutron-irradiated metallic alloys

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Application of sub-miniaturized bending tests to extract tensile properties from neutron-irradiated metallic alloys. / Bakaev, Alexander; Terentyev, Dmitry; Zinovev, Aleksandr; Chang, Chih-Cheng; Yin, Chao; Bakaev, Viktor A.; Zhurkin, Evgeni E.

In: Journal of Nuclear Materials, Vol. 558, 153320, 01.2022, p. 1-19.

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@article{41d49551041343e9aa04a233b8398460,
title = "Application of sub-miniaturized bending tests to extract tensile properties from neutron-irradiated metallic alloys",
abstract = "In this work, we demonstrate the applicability of sub-miniaturized three-point bending (3PB) testing for the extraction of tensile plastic properties of metallic materials, such as yield stress and work hardening rate. The approach is developed and validated on the example of tungsten. For this, dedicated finite element method (FEM) simulations are performed to reveal the correlation between the flexural stress-strain response in 3PB tests and yield stress in tensile tests. Furthermore, a dedicated inverse FEM procedure utilizing rate-sensitive isotropic physical model is developed to extract both yield stress and work hardening rate from the available set of bending tests. Both FEM-based approaches are first benchmarked on unirradiated materials and then validated using neutron-irradiated tungsten grades. The accuracy of the tensile properties extracted using both methods is discussed along with the estimation of a number of 3PB tests required to reach a target precision. The applicability of 3PB geometry for the extraction of tensile properties from unirradiated bending tests below ductile-to-brittle transition temperature (DBTT) is also addressed.",
keywords = "Tensile tests, Three-point bending tests, Finite element method simulations, Inverse FEM, Neutron irradiation, Radiation defects, Yield stress, Work hardening, Stress-strain curve, Flexural properties",
author = "Alexander Bakaev and Dmitry Terentyev and Aleksandr Zinovev and Chih-Cheng Chang and Chao Yin and Bakaev, {Viktor A.} and Zhurkin, {Evgeni E.}",
note = "Score=10",
year = "2022",
month = jan,
doi = "10.1016/j.jnucmat.2021.153320",
language = "English",
volume = "558",
pages = "1--19",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Application of sub-miniaturized bending tests to extract tensile properties from neutron-irradiated metallic alloys

AU - Bakaev, Alexander

AU - Terentyev, Dmitry

AU - Zinovev, Aleksandr

AU - Chang, Chih-Cheng

AU - Yin, Chao

AU - Bakaev, Viktor A.

AU - Zhurkin, Evgeni E.

N1 - Score=10

PY - 2022/1

Y1 - 2022/1

N2 - In this work, we demonstrate the applicability of sub-miniaturized three-point bending (3PB) testing for the extraction of tensile plastic properties of metallic materials, such as yield stress and work hardening rate. The approach is developed and validated on the example of tungsten. For this, dedicated finite element method (FEM) simulations are performed to reveal the correlation between the flexural stress-strain response in 3PB tests and yield stress in tensile tests. Furthermore, a dedicated inverse FEM procedure utilizing rate-sensitive isotropic physical model is developed to extract both yield stress and work hardening rate from the available set of bending tests. Both FEM-based approaches are first benchmarked on unirradiated materials and then validated using neutron-irradiated tungsten grades. The accuracy of the tensile properties extracted using both methods is discussed along with the estimation of a number of 3PB tests required to reach a target precision. The applicability of 3PB geometry for the extraction of tensile properties from unirradiated bending tests below ductile-to-brittle transition temperature (DBTT) is also addressed.

AB - In this work, we demonstrate the applicability of sub-miniaturized three-point bending (3PB) testing for the extraction of tensile plastic properties of metallic materials, such as yield stress and work hardening rate. The approach is developed and validated on the example of tungsten. For this, dedicated finite element method (FEM) simulations are performed to reveal the correlation between the flexural stress-strain response in 3PB tests and yield stress in tensile tests. Furthermore, a dedicated inverse FEM procedure utilizing rate-sensitive isotropic physical model is developed to extract both yield stress and work hardening rate from the available set of bending tests. Both FEM-based approaches are first benchmarked on unirradiated materials and then validated using neutron-irradiated tungsten grades. The accuracy of the tensile properties extracted using both methods is discussed along with the estimation of a number of 3PB tests required to reach a target precision. The applicability of 3PB geometry for the extraction of tensile properties from unirradiated bending tests below ductile-to-brittle transition temperature (DBTT) is also addressed.

KW - Tensile tests

KW - Three-point bending tests

KW - Finite element method simulations

KW - Inverse FEM

KW - Neutron irradiation

KW - Radiation defects

KW - Yield stress

KW - Work hardening

KW - Stress-strain curve

KW - Flexural properties

UR - https://ecm.sckcen.be/OTCS/llisapi.dll?func=ll&objId=46178312&objAction=download

U2 - 10.1016/j.jnucmat.2021.153320

DO - 10.1016/j.jnucmat.2021.153320

M3 - Article

VL - 558

SP - 1

EP - 19

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

M1 - 153320

ER -

ID: 7219352