Nano-hardness, EBSD analysis and mechanical behavior of ultra-fine grain tungsten for fusion applications as plasma facing material

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Nano-hardness, EBSD analysis and mechanical behavior of ultra-fine grain tungsten for fusion applications as plasma facing material. / Tanure, Leandro; Bakaeva, Anastasiia; Lapeire, Linsey; Terentyev, Dmitry; Vilémová, Monika; Matejicek, Jiri; Verbeken, Kim.

In: Surface and Coatings Technology, Vol. 355, 15.12.2018, p. 252-258.

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Tanure, Leandro ; Bakaeva, Anastasiia ; Lapeire, Linsey ; Terentyev, Dmitry ; Vilémová, Monika ; Matejicek, Jiri ; Verbeken, Kim. / Nano-hardness, EBSD analysis and mechanical behavior of ultra-fine grain tungsten for fusion applications as plasma facing material. In: Surface and Coatings Technology. 2018 ; Vol. 355. pp. 252-258.

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@article{7fb3383afa3049b6aca521653d07d8fa,
title = "Nano-hardness, EBSD analysis and mechanical behavior of ultra-fine grain tungsten for fusion applications as plasma facing material",
abstract = "Tungsten and its alloys have been extensively studied in order to be used in plasma facing components for future fusion nuclear reactors such as ITER and DEMO. In this work, an evaluation of nano-hardness, microstructure/texture and mechanical behavior using nano-indentation, electron backscatter diffraction (EBSD) and tensile test was performed. The investigated materials were ultra-fine grain lab-scale tungsten and ITER-specification commercial tungsten products, taken as reference in the as-received and annealed (at 1300 °C for 1 h) conditions. Three ultra-fine grain (UFG) tungsten grades were produced under different spark plasma sintering conditions, namely at 2000 °C and 70 MPa, at 1700 °C and 80 MPa and, finally, at 1800 °C and 80 MPa. EBSD analysis provides very relevant data as it is known that the crystallographic orientation affects some features of the surface damage caused by fusion-relevant plasma exposure. The present results will serve as a reference for future studies that will be carried out using plasma-exposed samples in order to correlate the observed damage with the microstructural characteristics and mechanical behavior.",
keywords = "Tungsten, EBSD, nano-hardness, Microstructure, Texture, mechanical behavior",
author = "Leandro Tanure and Anastasiia Bakaeva and Linsey Lapeire and Dmitry Terentyev and Monika Vil{\'e}mov{\'a} and Jiri Matejicek and Kim Verbeken",
note = "Score=10",
year = "2018",
month = "12",
day = "15",
doi = "10.1016/j.surfcoat.2018.01.075",
language = "English",
volume = "355",
pages = "252--258",
journal = "Surface and Coatings Technology",
issn = "0257-8972",
publisher = "Elsevier",

}

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TY - JOUR

T1 - Nano-hardness, EBSD analysis and mechanical behavior of ultra-fine grain tungsten for fusion applications as plasma facing material

AU - Tanure, Leandro

AU - Bakaeva, Anastasiia

AU - Lapeire, Linsey

AU - Terentyev, Dmitry

AU - Vilémová, Monika

AU - Matejicek, Jiri

AU - Verbeken, Kim

N1 - Score=10

PY - 2018/12/15

Y1 - 2018/12/15

N2 - Tungsten and its alloys have been extensively studied in order to be used in plasma facing components for future fusion nuclear reactors such as ITER and DEMO. In this work, an evaluation of nano-hardness, microstructure/texture and mechanical behavior using nano-indentation, electron backscatter diffraction (EBSD) and tensile test was performed. The investigated materials were ultra-fine grain lab-scale tungsten and ITER-specification commercial tungsten products, taken as reference in the as-received and annealed (at 1300 °C for 1 h) conditions. Three ultra-fine grain (UFG) tungsten grades were produced under different spark plasma sintering conditions, namely at 2000 °C and 70 MPa, at 1700 °C and 80 MPa and, finally, at 1800 °C and 80 MPa. EBSD analysis provides very relevant data as it is known that the crystallographic orientation affects some features of the surface damage caused by fusion-relevant plasma exposure. The present results will serve as a reference for future studies that will be carried out using plasma-exposed samples in order to correlate the observed damage with the microstructural characteristics and mechanical behavior.

AB - Tungsten and its alloys have been extensively studied in order to be used in plasma facing components for future fusion nuclear reactors such as ITER and DEMO. In this work, an evaluation of nano-hardness, microstructure/texture and mechanical behavior using nano-indentation, electron backscatter diffraction (EBSD) and tensile test was performed. The investigated materials were ultra-fine grain lab-scale tungsten and ITER-specification commercial tungsten products, taken as reference in the as-received and annealed (at 1300 °C for 1 h) conditions. Three ultra-fine grain (UFG) tungsten grades were produced under different spark plasma sintering conditions, namely at 2000 °C and 70 MPa, at 1700 °C and 80 MPa and, finally, at 1800 °C and 80 MPa. EBSD analysis provides very relevant data as it is known that the crystallographic orientation affects some features of the surface damage caused by fusion-relevant plasma exposure. The present results will serve as a reference for future studies that will be carried out using plasma-exposed samples in order to correlate the observed damage with the microstructural characteristics and mechanical behavior.

KW - Tungsten

KW - EBSD

KW - nano-hardness

KW - Microstructure

KW - Texture

KW - mechanical behavior

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/overview/34753426

U2 - 10.1016/j.surfcoat.2018.01.075

DO - 10.1016/j.surfcoat.2018.01.075

M3 - Special issue

VL - 355

SP - 252

EP - 258

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

ER -

ID: 5891215