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10.1016_j.nme.2018.08.003.pdf1.25 MBAdobe PDF見る/開く
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dc.contributor.authorSato, K.
dc.contributor.authorYamashita, H.
dc.contributor.authorHirosako, A.
dc.contributor.authorKomazaki, S.
dc.contributor.authorXu, Q.
dc.contributor.authorOnoue, M.
dc.contributor.authorKasada, R.
dc.contributor.authorYabuuchi, K.
dc.contributor.authorKimura, A.
dc.contributor.alternative徐, 虬
dc.contributor.alternative藪内, 聖皓
dc.contributor.alternative木村, 晃彦
dc.date.accessioned2018-11-12T02:27:57Z-
dc.date.available2018-11-12T02:27:57Z-
dc.date.issued2018-12
dc.identifier.issn2352-1791
dc.identifier.urihttp://hdl.handle.net/2433/235017-
dc.description.abstractThe effect of hydrogen on the hardness and tensile properties of pure tungsten was examined using Vickers hardness and tensile tests. Samples were exposed to high-pressure hydrogen gas (5.8 MPa). The tensile behavior, tensile fracture surface, and hardness of as-received and stress-relieved tungsten did not change after hydrogen charging, owing to the low solubility of hydrogen. Therefore, to understand the effect of hydrogen on these materials, experiments must be performed to trap more hydrogen atoms at dislocations. In contrast, the hardness of electron-irradiated tungsten increased after hydrogen charging. Additionally, after a heat treatment at 473 K, hydrogen atoms dissociated from single vacancies, and the hardness decreased to the pre-charged value. Thus, single vacancies decorated with hydrogen atoms are expected to obstruct dislocation motion.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherElsevier BV
dc.rights© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
dc.subjectTungsten
dc.subjectHydrogen
dc.subjectHardness
dc.subjectTensile test
dc.subjectDefects
dc.subjectElectron irradiation
dc.titleInvestigation of mechanical properties of stress-relieved and electron-irradiated tungsten after hydrogen charging
dc.type.niitypeJournal Article
dc.identifier.jtitleNuclear Materials and Energy
dc.identifier.volume17
dc.identifier.spage29
dc.identifier.epage33
dc.relation.doi10.1016/j.nme.2018.08.003
dc.textversionpublisher
dc.addressGraduate School of Science and Engineering, Kagoshima University
dc.addressGraduate School of Science and Engineering, Kagoshima University
dc.addressGraduate School of Science and Engineering, Kagoshima University
dc.addressGraduate School of Science and Engineering, Kagoshima University
dc.addressResearch Reactor Institute, Kyoto University
dc.addressNatural Science Center for Research and Education, Kagoshima University
dc.addressInstitute for Materials Research, Tohoku University
dc.addressInstitute of Advanced Energy, Kyoto University
dc.addressInstitute of Advanced Energy, Kyoto University
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