K
Kiyomichi Nakai
Researcher at Ehime University
Publications - 113
Citations - 1949
Kiyomichi Nakai is an academic researcher from Ehime University. The author has contributed to research in topics: Bainite & Austenite. The author has an hindex of 20, co-authored 113 publications receiving 1734 citations.
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Effects of ω-phase precipitation on β→α, α′′ transformations in a metastable β titanium alloy
TL;DR: In this article, the effects of ω phase precipitation on β→α, α′′ transformations in a metastable β titanium alloy have been studied by means of transmission electron microscopy.
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Development of ultra-fine grained W–TiC and their mechanical properties for fusion applications
Hiroaki Kurishita,Y. Amano,Sengo Kobayashi,Kiyomichi Nakai,H. Arakawa,Yutaka Hiraoka,T. Takida,K. Takebe,Hideki Matsui +8 more
TL;DR: In this article, the effects of neutron irradiation on microstructural evolution and radiation hardening were examined for fine-grained W-0.3%TiC and commercially available pure W-20μm.
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Development of ultra-fine grained W–(0.25–0.8)wt%TiC and its superior resistance to neutron and 3 MeV He-ion irradiations
Hiroaki Kurishita,Sengo Kobayashi,Kiyomichi Nakai,T. Ogawa,Akira Hasegawa,K. Abe,H. Arakawa,S. Matsuo,T. Takida,K. Takebe,Masayoshi Kawai,N. Yoshida +11 more
TL;DR: In this article, the authors used mechanical alloying (MA) in different gas atmospheres of H 2, Ar and N 2 and hot isostatic pressing to construct W-TiC with equiaxed grain sizes of 50-200nm and nearly full density of 99%.
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Development of nanostructured tungsten based materials resistant to recrystallization and/or radiation induced embrittlement
Hiroaki Kurishita,H. Arakawa,S. Matsuo,Tatsuaki Sakamoto,Sengo Kobayashi,Kiyomichi Nakai,Gerald Pintsuk,Jochen Linke,Sadahiro Tsurekawa,V A Yardley,Kazutoshi Tokunaga,T. Takida,M. Katoh,A. Ikegaya,Yoshio Ueda,Masayoshi Kawai,Nobuaki Yoshida +16 more
TL;DR: In this paper, a sliding-based microstructural modification method was proposed to strengthen the random grain boundaries (GBs) in the recrystallized state of tungsten-based materials.
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Pearlite to austenite transformation in an Fe-2.6Cr-1C alloy
TL;DR: In this paper, the mechanism of austenite formation, the kinetics of cementite lamellae dissolution and the crystallography of the austenitization from pearlite have been studied in an Fe 2.6 × Cr 0.96 × C alloy.