Spark plasma sintered tungsten –mechanical properties, irradiation effects and thermal shock performance

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Spark plasma sintered tungsten –mechanical properties, irradiation effects and thermal shock performance. / Matejicek, Jiri; Veverka, Jakub; Yin, Chao; Vilémová, Monika; Terentyev, Dmitry; Wirtz, Marius; Dubinko, Andrii; Habraba, Hynek.

In: Journal of Nuclear Materials, Vol. 542, 152518, 11.09.2020, p. 1-10.

Research output: Contribution to journalArticlepeer-review

Harvard

Matejicek, J, Veverka, J, Yin, C, Vilémová, M, Terentyev, D, Wirtz, M, Dubinko, A & Habraba, H 2020, 'Spark plasma sintered tungsten –mechanical properties, irradiation effects and thermal shock performance', Journal of Nuclear Materials, vol. 542, 152518, pp. 1-10. https://doi.org/10.1016/j.jnucmat.2020.152518

APA

Matejicek, J., Veverka, J., Yin, C., Vilémová, M., Terentyev, D., Wirtz, M., Dubinko, A., & Habraba, H. (2020). Spark plasma sintered tungsten –mechanical properties, irradiation effects and thermal shock performance. Journal of Nuclear Materials, 542, 1-10. [152518]. https://doi.org/10.1016/j.jnucmat.2020.152518

Vancouver

Matejicek J, Veverka J, Yin C, Vilémová M, Terentyev D, Wirtz M et al. Spark plasma sintered tungsten –mechanical properties, irradiation effects and thermal shock performance. Journal of Nuclear Materials. 2020 Sep 11;542:1-10. 152518. https://doi.org/10.1016/j.jnucmat.2020.152518

Author

Matejicek, Jiri ; Veverka, Jakub ; Yin, Chao ; Vilémová, Monika ; Terentyev, Dmitry ; Wirtz, Marius ; Dubinko, Andrii ; Habraba, Hynek. / Spark plasma sintered tungsten –mechanical properties, irradiation effects and thermal shock performance. In: Journal of Nuclear Materials. 2020 ; Vol. 542. pp. 1-10.

Bibtex - Download

@article{ae16776881d64a1ea9c97961505c9e75,
title = "Spark plasma sintered tungsten –mechanical properties, irradiation effects and thermal shock performance",
abstract = "Tungsten-based materials are the most prospective candidates for the plasma facing components for fu- ture fusion devices, such as DEMO. In order to improve their properties, various modifications are being developed, including composites, alloys, and different processing routes. Spark plasma sintering (SPS) is among the prospective preparation technologies; thanks to the relatively low temperatures and short pro- cessing times, it enables the preservation of fine grain structure, beneficial for radiation resistance. In a previous study, SPS W has shown promising mechanical properties at moderate temperatures, however, the irradiation effects were yet to be investigated. Fine-grained W was prepared by spark plasma sintering. Together with other W-based materials, the sam- ples were neutron-irradiated at the BR2 reactor at 60 0 and 10 0 0 °C up to 0.24 and 0.7 dpa, respectively. Mechanical testing - including tensile test and fracture toughness tests - was performed in irradiated and un-irradiated states in the 20 0–60 0 °C temperature range. Fractographic observations were performed to help in understanding the impact of the irradiation effects on the fracture mechanism. For the SPS W, a shift of DBTT from ~300 °C to ~600 °C due to irradiation was observed. High heat flux testing was carried out in repeated thermal shock mode at the PSI-2 device at room temperature, 400 and 1000 °C and fluxes up to 1.6 GW/m 2 . The results showed rather promising resistance to cracking under these conditions. In these tests, the SPS tungsten showed comparable or better performance than reference, ITER-qualified tungsten material.",
keywords = "Tungsten, Irradiation, Fusion",
author = "Jiri Matejicek and Jakub Veverka and Chao Yin and Monika Vil{\'e}mov{\'a} and Dmitry Terentyev and Marius Wirtz and Andrii Dubinko and Hynek Habraba",
note = "Score=10",
year = "2020",
month = sep,
day = "11",
doi = "10.1016/j.jnucmat.2020.152518",
language = "English",
volume = "542",
pages = "1--10",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

RIS - Download

TY - JOUR

T1 - Spark plasma sintered tungsten –mechanical properties, irradiation effects and thermal shock performance

AU - Matejicek, Jiri

AU - Veverka, Jakub

AU - Yin, Chao

AU - Vilémová, Monika

AU - Terentyev, Dmitry

AU - Wirtz, Marius

AU - Dubinko, Andrii

AU - Habraba, Hynek

N1 - Score=10

PY - 2020/9/11

Y1 - 2020/9/11

N2 - Tungsten-based materials are the most prospective candidates for the plasma facing components for fu- ture fusion devices, such as DEMO. In order to improve their properties, various modifications are being developed, including composites, alloys, and different processing routes. Spark plasma sintering (SPS) is among the prospective preparation technologies; thanks to the relatively low temperatures and short pro- cessing times, it enables the preservation of fine grain structure, beneficial for radiation resistance. In a previous study, SPS W has shown promising mechanical properties at moderate temperatures, however, the irradiation effects were yet to be investigated. Fine-grained W was prepared by spark plasma sintering. Together with other W-based materials, the sam- ples were neutron-irradiated at the BR2 reactor at 60 0 and 10 0 0 °C up to 0.24 and 0.7 dpa, respectively. Mechanical testing - including tensile test and fracture toughness tests - was performed in irradiated and un-irradiated states in the 20 0–60 0 °C temperature range. Fractographic observations were performed to help in understanding the impact of the irradiation effects on the fracture mechanism. For the SPS W, a shift of DBTT from ~300 °C to ~600 °C due to irradiation was observed. High heat flux testing was carried out in repeated thermal shock mode at the PSI-2 device at room temperature, 400 and 1000 °C and fluxes up to 1.6 GW/m 2 . The results showed rather promising resistance to cracking under these conditions. In these tests, the SPS tungsten showed comparable or better performance than reference, ITER-qualified tungsten material.

AB - Tungsten-based materials are the most prospective candidates for the plasma facing components for fu- ture fusion devices, such as DEMO. In order to improve their properties, various modifications are being developed, including composites, alloys, and different processing routes. Spark plasma sintering (SPS) is among the prospective preparation technologies; thanks to the relatively low temperatures and short pro- cessing times, it enables the preservation of fine grain structure, beneficial for radiation resistance. In a previous study, SPS W has shown promising mechanical properties at moderate temperatures, however, the irradiation effects were yet to be investigated. Fine-grained W was prepared by spark plasma sintering. Together with other W-based materials, the sam- ples were neutron-irradiated at the BR2 reactor at 60 0 and 10 0 0 °C up to 0.24 and 0.7 dpa, respectively. Mechanical testing - including tensile test and fracture toughness tests - was performed in irradiated and un-irradiated states in the 20 0–60 0 °C temperature range. Fractographic observations were performed to help in understanding the impact of the irradiation effects on the fracture mechanism. For the SPS W, a shift of DBTT from ~300 °C to ~600 °C due to irradiation was observed. High heat flux testing was carried out in repeated thermal shock mode at the PSI-2 device at room temperature, 400 and 1000 °C and fluxes up to 1.6 GW/m 2 . The results showed rather promising resistance to cracking under these conditions. In these tests, the SPS tungsten showed comparable or better performance than reference, ITER-qualified tungsten material.

KW - Tungsten

KW - Irradiation

KW - Fusion

UR - https://ecm.sckcen.be/OTCS/llisapi.dll/open/41677071

U2 - 10.1016/j.jnucmat.2020.152518

DO - 10.1016/j.jnucmat.2020.152518

M3 - Article

VL - 542

SP - 1

EP - 10

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

M1 - 152518

ER -

ID: 6987482