Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties

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Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties. / Panayotis, Stephanie; Hirai, Takeshi; Barabash, Valdimir; Durocher, Alain; Escourbiac, F.; Linke, Jochen; Loewenhoff, Thorsten; Merola, Mario; Pintsuk, Gerald; Uytdenhouwen, Inge; Wirtz, Marius.

In: Nuclear Materials and Energy, 27.12.2016, p. 1-5.

Research output: Contribution to journalArticle

Harvard

Panayotis, S, Hirai, T, Barabash, V, Durocher, A, Escourbiac, F, Linke, J, Loewenhoff, T, Merola, M, Pintsuk, G, Uytdenhouwen, I & Wirtz, M 2016, 'Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties', Nuclear Materials and Energy, pp. 1-5. https://doi.org/10.1016/j.nme.2016.10.025

APA

Panayotis, S., Hirai, T., Barabash, V., Durocher, A., Escourbiac, F., Linke, J., ... Wirtz, M. (2016). Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties. Nuclear Materials and Energy, 1-5. https://doi.org/10.1016/j.nme.2016.10.025

Vancouver

Panayotis S, Hirai T, Barabash V, Durocher A, Escourbiac F, Linke J et al. Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties. Nuclear Materials and Energy. 2016 Dec 27;1-5. https://doi.org/10.1016/j.nme.2016.10.025

Author

Panayotis, Stephanie ; Hirai, Takeshi ; Barabash, Valdimir ; Durocher, Alain ; Escourbiac, F. ; Linke, Jochen ; Loewenhoff, Thorsten ; Merola, Mario ; Pintsuk, Gerald ; Uytdenhouwen, Inge ; Wirtz, Marius. / Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties. In: Nuclear Materials and Energy. 2016 ; pp. 1-5.

Bibtex - Download

@article{3ec177a3aede486899db96f598eadb40,
title = "Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties",
abstract = "In the full-tungsten divertor qualification program at ITER Organization, macro-cracks, so called self-castellation were found in a fraction of tungsten monoblocks during cyclic high heat flux loading at 20MW/m2. The number of monoblocks with macro-cracks varied with the tungsten products used as armour material. In order to understand correlation between the macro-crack appearance and W properties, an activity to characterize W monoblock materials was launched at the IO. The outcome highlighted that the higher the recrystallization resistance, the lower the number of cracks detected during high heat flux tests. Thermo-mechanical finite element modelling demonstrated that the maximum surface temperature ranges from 1800 °C to 2200 °C and in this range recrystallization of tungsten occurred. Furthermore, it indicated that loss of strength due to recrystallization is responsible for the development of macro-cracks in the tungsten monoblock.",
keywords = "Fracture, Tungsten, ITER, high heat flux, Divertor, recrystallization",
author = "Stephanie Panayotis and Takeshi Hirai and Valdimir Barabash and Alain Durocher and F. Escourbiac and Jochen Linke and Thorsten Loewenhoff and Mario Merola and Gerald Pintsuk and Inge Uytdenhouwen and Marius Wirtz",
note = "Score=10",
year = "2016",
month = "12",
day = "27",
doi = "10.1016/j.nme.2016.10.025",
language = "English",
pages = "1--5",
journal = "Nuclear Materials and Energy",
issn = "2352-1791",
publisher = "Elsevier",

}

RIS - Download

TY - JOUR

T1 - Self-castellation of tungsten monoblock under high heat flux loading and impact of material properties

AU - Panayotis, Stephanie

AU - Hirai, Takeshi

AU - Barabash, Valdimir

AU - Durocher, Alain

AU - Escourbiac, F.

AU - Linke, Jochen

AU - Loewenhoff, Thorsten

AU - Merola, Mario

AU - Pintsuk, Gerald

AU - Uytdenhouwen, Inge

AU - Wirtz, Marius

N1 - Score=10

PY - 2016/12/27

Y1 - 2016/12/27

N2 - In the full-tungsten divertor qualification program at ITER Organization, macro-cracks, so called self-castellation were found in a fraction of tungsten monoblocks during cyclic high heat flux loading at 20MW/m2. The number of monoblocks with macro-cracks varied with the tungsten products used as armour material. In order to understand correlation between the macro-crack appearance and W properties, an activity to characterize W monoblock materials was launched at the IO. The outcome highlighted that the higher the recrystallization resistance, the lower the number of cracks detected during high heat flux tests. Thermo-mechanical finite element modelling demonstrated that the maximum surface temperature ranges from 1800 °C to 2200 °C and in this range recrystallization of tungsten occurred. Furthermore, it indicated that loss of strength due to recrystallization is responsible for the development of macro-cracks in the tungsten monoblock.

AB - In the full-tungsten divertor qualification program at ITER Organization, macro-cracks, so called self-castellation were found in a fraction of tungsten monoblocks during cyclic high heat flux loading at 20MW/m2. The number of monoblocks with macro-cracks varied with the tungsten products used as armour material. In order to understand correlation between the macro-crack appearance and W properties, an activity to characterize W monoblock materials was launched at the IO. The outcome highlighted that the higher the recrystallization resistance, the lower the number of cracks detected during high heat flux tests. Thermo-mechanical finite element modelling demonstrated that the maximum surface temperature ranges from 1800 °C to 2200 °C and in this range recrystallization of tungsten occurred. Furthermore, it indicated that loss of strength due to recrystallization is responsible for the development of macro-cracks in the tungsten monoblock.

KW - Fracture

KW - Tungsten

KW - ITER

KW - high heat flux

KW - Divertor

KW - recrystallization

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/25233900

U2 - 10.1016/j.nme.2016.10.025

DO - 10.1016/j.nme.2016.10.025

M3 - Article

SP - 1

EP - 5

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

SN - 2352-1791

ER -

ID: 2705714