Strong sub-surface plastic deformation induced by high flux plasma in tungsten

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Strong sub-surface plastic deformation induced by high flux plasma in tungsten. / Terentyev, Dmitry; Dubinko, Andrii; Bakaeva, Anastasiia; De Temmerman, Gregory.

In: fusion engineering and design, Vol. 124, 01.11.2017, p. 405-409.

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Terentyev, Dmitry ; Dubinko, Andrii ; Bakaeva, Anastasiia ; De Temmerman, Gregory. / Strong sub-surface plastic deformation induced by high flux plasma in tungsten. In: fusion engineering and design. 2017 ; Vol. 124. pp. 405-409.

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@article{1b2f5db301374de08fdb7c2c0932ed9f,
title = "Strong sub-surface plastic deformation induced by high flux plasma in tungsten",
abstract = "We present experimental data obtained by post-examination of polycrystalline and single crystal tungsten exposed to high flux deuterium plasma (1024 D/m2/s). The exposures were performed in the temperature range 450–600 K and followed by nuclear reaction analysis (NRA), transmission electron microscopy (TEM) and nano-indentation measurements. Direct TEM observation of the high dislocation density in the sub-surface of the plasma-exposed samples implies the occurrence of strong (and fast) local plastic deformation apparently enhanced by the availability of deuterium penetrating in the material. The sharp NRA profile, as usually measured after high flux low temperature plasma exposure, correlates well with the dislocation density evolution and hardness increase within 10–15 μm of the material subsurface. Importantly, the heavy plastic deformation was induced in similar amounts in both commercial pure polycrystalline and single crystal tungsten grades.",
keywords = "Tungsten, Plasma, Deformation, Dislocation",
author = "Dmitry Terentyev and Andrii Dubinko and Anastasiia Bakaeva and {De Temmerman}, Gregory",
note = "Score=10; 2016 - SOFT-29 - Proceedings of the 29th Symposium on Fusion Technology ; Conference date: 05-09-2016 Through 09-09-2016",
year = "2017",
month = nov,
day = "1",
doi = "10.1016/j.fusengdes.2017.02.043",
language = "English",
volume = "124",
pages = "405--409",
journal = "Fusion Engineering & Design",
issn = "0920-3796",
publisher = "Elsevier",
url = "https://www.sciencedirect.com/journal/fusion-engineering-and-design/vol/124/suppl/C",

}

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TY - JOUR

T1 - Strong sub-surface plastic deformation induced by high flux plasma in tungsten

AU - Terentyev, Dmitry

AU - Dubinko, Andrii

AU - Bakaeva, Anastasiia

AU - De Temmerman, Gregory

N1 - Score=10

PY - 2017/11/1

Y1 - 2017/11/1

N2 - We present experimental data obtained by post-examination of polycrystalline and single crystal tungsten exposed to high flux deuterium plasma (1024 D/m2/s). The exposures were performed in the temperature range 450–600 K and followed by nuclear reaction analysis (NRA), transmission electron microscopy (TEM) and nano-indentation measurements. Direct TEM observation of the high dislocation density in the sub-surface of the plasma-exposed samples implies the occurrence of strong (and fast) local plastic deformation apparently enhanced by the availability of deuterium penetrating in the material. The sharp NRA profile, as usually measured after high flux low temperature plasma exposure, correlates well with the dislocation density evolution and hardness increase within 10–15 μm of the material subsurface. Importantly, the heavy plastic deformation was induced in similar amounts in both commercial pure polycrystalline and single crystal tungsten grades.

AB - We present experimental data obtained by post-examination of polycrystalline and single crystal tungsten exposed to high flux deuterium plasma (1024 D/m2/s). The exposures were performed in the temperature range 450–600 K and followed by nuclear reaction analysis (NRA), transmission electron microscopy (TEM) and nano-indentation measurements. Direct TEM observation of the high dislocation density in the sub-surface of the plasma-exposed samples implies the occurrence of strong (and fast) local plastic deformation apparently enhanced by the availability of deuterium penetrating in the material. The sharp NRA profile, as usually measured after high flux low temperature plasma exposure, correlates well with the dislocation density evolution and hardness increase within 10–15 μm of the material subsurface. Importantly, the heavy plastic deformation was induced in similar amounts in both commercial pure polycrystalline and single crystal tungsten grades.

KW - Tungsten

KW - Plasma

KW - Deformation

KW - Dislocation

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/35793683

U2 - 10.1016/j.fusengdes.2017.02.043

DO - 10.1016/j.fusengdes.2017.02.043

M3 - Special issue

VL - 124

SP - 405

EP - 409

JO - Fusion Engineering & Design

JF - Fusion Engineering & Design

SN - 0920-3796

T2 - 2016 - SOFT-29 - Proceedings of the 29th Symposium on Fusion Technology

Y2 - 5 September 2016 through 9 September 2016

ER -

ID: 5656140