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dc.contributor.authorMorrall, Daniel
dc.contributor.authorGao, Jin
dc.contributor.authorZhang, Zhexian
dc.contributor.authorYabuuchi, Kiyohiro
dc.contributor.authorKimura, Akihiko
dc.contributor.authorIshizaki, Takahiro
dc.contributor.authorMaruno, Yusaku
dc.contributor.alternative高, 进
dc.contributor.alternative張, 哲先
dc.contributor.alternative藪内, 聖皓
dc.contributor.alternative木村, 晃彦
dc.date.accessioned2018-08-10T01:15:12Z-
dc.date.available2018-08-10T01:15:12Z-
dc.date.issued2018-05
dc.identifier.issn2352-1791
dc.identifier.urihttp://hdl.handle.net/2433/233813-
dc.description.abstractA mechanically alloyed austenitic stainless steel (MA304LZ) was produced from pre-alloyed SUS304L powder with a small amount of Zr addition. The yield stress of MA304LZ was more than 3 times larger than that of SUS304L or 316L, while total elongation was reduced to about one third of the conventional steels. Microstructure analysis revealed an average grain size of 0.42 µm in MA304LZ and about 34/30 µm in SUS304L/316 L. In MA304LZ, two types of precipitates were observed; inhomogeneously distributed fine precipitates with an average size of 6.0 nm and homogeneously distributed coarse precipitates (d > 20 nm) with an average size of 47 nm. The strengthening mechanism of MA304LZ was discussed on the bases of Hall-Petch and Orowan equations, and the strengthening of MA304LZ was attributed mostly to refined grains. The dislocation barrier strength factor, α, is estimated to be 0.277 for the Zr-rich precipitates in MA304LZ.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherElsevier BV
dc.rights© 2018 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.subjectPowder metallurgy
dc.subjectGrain size effect
dc.subjectPrecipitation hardening
dc.subjectZr-oxides
dc.titleTensile properties of mechanically alloyed Zr added austenitic stainless steel
dc.type.niitypeJournal Article
dc.identifier.jtitleNuclear Materials and Energy
dc.identifier.volume15
dc.identifier.spage92
dc.identifier.epage96
dc.relation.doi10.1016/j.nme.2018.03.002
dc.textversionpublisher
dc.addressGraduate School of Energy Science, Kyoto University
dc.addressInstitute of Advanced Energy, Kyoto University
dc.addressInstitute of Advanced Energy, Kyoto University
dc.addressInstitute of Advanced Energy, Kyoto University
dc.addressInstitute of Advanced Energy, Kyoto University
dc.addressHitachi, Ltd. Research & Development Group
dc.addressHitachi, Ltd. Research & Development Group
出現コレクション:学術雑誌掲載論文等

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