High temperature nanoindentation of tungsten: Modelling and experimental validation

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High temperature nanoindentation of tungsten: Modelling and experimental validation. / Terentyev, Dmitry; Xiao, Xiazi; Lemeshko, S.; Hangen, Ude D.; Zhurkin, Evgeni E.

In: International Journal of Refractory Metals & Hard Materials, Vol. 89, 105222, 22.06.2020, p. 1-12.

Research output: Contribution to journalArticle

Harvard

Terentyev, D, Xiao, X, Lemeshko, S, Hangen, UD & Zhurkin, EE 2020, 'High temperature nanoindentation of tungsten: Modelling and experimental validation', International Journal of Refractory Metals & Hard Materials, vol. 89, 105222, pp. 1-12. https://doi.org/10.1016/j.ijrmhm.2020.105222

APA

Terentyev, D., Xiao, X., Lemeshko, S., Hangen, U. D., & Zhurkin, E. E. (2020). High temperature nanoindentation of tungsten: Modelling and experimental validation. International Journal of Refractory Metals & Hard Materials, 89, 1-12. [105222]. https://doi.org/10.1016/j.ijrmhm.2020.105222

Vancouver

Terentyev D, Xiao X, Lemeshko S, Hangen UD, Zhurkin EE. High temperature nanoindentation of tungsten: Modelling and experimental validation. International Journal of Refractory Metals & Hard Materials. 2020 Jun 22;89:1-12. 105222. https://doi.org/10.1016/j.ijrmhm.2020.105222

Author

Terentyev, Dmitry ; Xiao, Xiazi ; Lemeshko, S. ; Hangen, Ude D. ; Zhurkin, Evgeni E. / High temperature nanoindentation of tungsten: Modelling and experimental validation. In: International Journal of Refractory Metals & Hard Materials. 2020 ; Vol. 89. pp. 1-12.

Bibtex - Download

@article{e89971ed5d3f42fab4ff66921cabd58b,
title = "High temperature nanoindentation of tungsten: Modelling and experimental validation",
abstract = "Knowledge of mechanical properties of the tungsten surface region is extremely important for its application as first wall materials in plasma-facing components for nuclear fusion devices (e.g. ITER). Since tungsten is intrinsically brittle at room temperature, characterization of its ductile properties is possible only above the socalled ductile-to-brittle transition temperature (DBTT), which is above 500–700 K. This is why the development and qualification of instrumented hardness measurements at elevated temperature is an important task to enable the characterization of tungsten properties after exposure to heat shocks, plasma beam and ion irradiation, which all together mimic the actual operation conditions of nuclear fusion. We have performed nanoindentation measurements on tungsten in the constant stiffness mode using Bruker stage developed for high temperature operation with oxygen protective environment. Commercially pure tungsten of ITER specification is studied in the as-produced and as-recrystallized conditions to deduce the impact of the texture and forging on the hardness. The obtained results are analysed by means of crystal plasticity finite element method (CPFEM) model to subtract the constitutive laws for the elasto-plastic deformation and derive the strengthening term attributed to the contribution coming from statistically stored dislocations and grain boundaries.",
keywords = "High temperature, Nanoindentation, CPFEM, Tungsten, Dislocations, Hall-Petch",
author = "Dmitry Terentyev and Xiazi Xiao and S. Lemeshko and Hangen, {Ude D.} and Zhurkin, {Evgeni E.}",
note = "Score=10",
year = "2020",
month = "6",
day = "22",
doi = "10.1016/j.ijrmhm.2020.105222",
language = "English",
volume = "89",
pages = "1--12",
journal = "International Journal of Refractory Metals & Hard Materials",
issn = "0263-4368",
publisher = "Elsevier",

}

RIS - Download

TY - JOUR

T1 - High temperature nanoindentation of tungsten: Modelling and experimental validation

AU - Terentyev, Dmitry

AU - Xiao, Xiazi

AU - Lemeshko, S.

AU - Hangen, Ude D.

AU - Zhurkin, Evgeni E.

N1 - Score=10

PY - 2020/6/22

Y1 - 2020/6/22

N2 - Knowledge of mechanical properties of the tungsten surface region is extremely important for its application as first wall materials in plasma-facing components for nuclear fusion devices (e.g. ITER). Since tungsten is intrinsically brittle at room temperature, characterization of its ductile properties is possible only above the socalled ductile-to-brittle transition temperature (DBTT), which is above 500–700 K. This is why the development and qualification of instrumented hardness measurements at elevated temperature is an important task to enable the characterization of tungsten properties after exposure to heat shocks, plasma beam and ion irradiation, which all together mimic the actual operation conditions of nuclear fusion. We have performed nanoindentation measurements on tungsten in the constant stiffness mode using Bruker stage developed for high temperature operation with oxygen protective environment. Commercially pure tungsten of ITER specification is studied in the as-produced and as-recrystallized conditions to deduce the impact of the texture and forging on the hardness. The obtained results are analysed by means of crystal plasticity finite element method (CPFEM) model to subtract the constitutive laws for the elasto-plastic deformation and derive the strengthening term attributed to the contribution coming from statistically stored dislocations and grain boundaries.

AB - Knowledge of mechanical properties of the tungsten surface region is extremely important for its application as first wall materials in plasma-facing components for nuclear fusion devices (e.g. ITER). Since tungsten is intrinsically brittle at room temperature, characterization of its ductile properties is possible only above the socalled ductile-to-brittle transition temperature (DBTT), which is above 500–700 K. This is why the development and qualification of instrumented hardness measurements at elevated temperature is an important task to enable the characterization of tungsten properties after exposure to heat shocks, plasma beam and ion irradiation, which all together mimic the actual operation conditions of nuclear fusion. We have performed nanoindentation measurements on tungsten in the constant stiffness mode using Bruker stage developed for high temperature operation with oxygen protective environment. Commercially pure tungsten of ITER specification is studied in the as-produced and as-recrystallized conditions to deduce the impact of the texture and forging on the hardness. The obtained results are analysed by means of crystal plasticity finite element method (CPFEM) model to subtract the constitutive laws for the elasto-plastic deformation and derive the strengthening term attributed to the contribution coming from statistically stored dislocations and grain boundaries.

KW - High temperature

KW - Nanoindentation

KW - CPFEM

KW - Tungsten

KW - Dislocations

KW - Hall-Petch

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/38225727

U2 - 10.1016/j.ijrmhm.2020.105222

DO - 10.1016/j.ijrmhm.2020.105222

M3 - Article

VL - 89

SP - 1

EP - 12

JO - International Journal of Refractory Metals & Hard Materials

JF - International Journal of Refractory Metals & Hard Materials

SN - 0263-4368

M1 - 105222

ER -

ID: 6784257