Micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonics
The elastic properties of tungsten fiber-reinforced tungsten composites (Wf/W) were characterized on the micro- and macro- scale by combined nano-indentation and laser ultrasonic measurements, respectively. Wf/W composite materials are currently being developed as advanced tungsten (W) plasma facing...
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doaj-7aa3d7681b7949a499bd8b14fdd2ba222020-11-25T01:09:08ZengElsevierNuclear Materials and Energy2352-17912019-05-0119262266Micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonicsH.T. Lee0S. Ando1J.W. Coenen2Y. Mao3R. Kasada4J. Riesch5Y. Ueda6Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan; Corresponding author.Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, JapanForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung – Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), Jülich 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung – Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), Jülich 52425, GermanyInstitute of Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, JapanMax-Planck-Institut für Plasmaphysik, Garching 85748, GermanyGraduate School of Engineering, Osaka University, Suita, Osaka 565-0871, JapanThe elastic properties of tungsten fiber-reinforced tungsten composites (Wf/W) were characterized on the micro- and macro- scale by combined nano-indentation and laser ultrasonic measurements, respectively. Wf/W composite materials are currently being developed as advanced tungsten (W) plasma facing materials for fusion devices. They possess pseudo-ductility and can overcome some of the limitations caused by the inherent brittleness of pure-W at lower temperatures. The Young's modulus was determined by nano-indentation hardness measurements of the W-matrix and W-fibers separately. The values were combined by simple rule of mixture, and compared to bulk values obtained from laser ultrasonics measurements. The results show that the simple rule of mixtures is valid up to 50% fiber volume fractions.http://www.sciencedirect.com/science/article/pii/S2352179118302448 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
H.T. Lee S. Ando J.W. Coenen Y. Mao R. Kasada J. Riesch Y. Ueda |
spellingShingle |
H.T. Lee S. Ando J.W. Coenen Y. Mao R. Kasada J. Riesch Y. Ueda Micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonics Nuclear Materials and Energy |
author_facet |
H.T. Lee S. Ando J.W. Coenen Y. Mao R. Kasada J. Riesch Y. Ueda |
author_sort |
H.T. Lee |
title |
Micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonics |
title_short |
Micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonics |
title_full |
Micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonics |
title_fullStr |
Micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonics |
title_full_unstemmed |
Micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonics |
title_sort |
micro- and macro- elastic properties of tungsten fiber-reinforced tungsten composites probed by nano-indentation and laser ultrasonics |
publisher |
Elsevier |
series |
Nuclear Materials and Energy |
issn |
2352-1791 |
publishDate |
2019-05-01 |
description |
The elastic properties of tungsten fiber-reinforced tungsten composites (Wf/W) were characterized on the micro- and macro- scale by combined nano-indentation and laser ultrasonic measurements, respectively. Wf/W composite materials are currently being developed as advanced tungsten (W) plasma facing materials for fusion devices. They possess pseudo-ductility and can overcome some of the limitations caused by the inherent brittleness of pure-W at lower temperatures. The Young's modulus was determined by nano-indentation hardness measurements of the W-matrix and W-fibers separately. The values were combined by simple rule of mixture, and compared to bulk values obtained from laser ultrasonics measurements. The results show that the simple rule of mixtures is valid up to 50% fiber volume fractions. |
url |
http://www.sciencedirect.com/science/article/pii/S2352179118302448 |
work_keys_str_mv |
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