Search Results - "Koyano, Tamotsu"

Effects of oxygen concentration and temperature on deformation behavior of Ti-Nb-Zr-Ta-O alloys by Wei, Le Si, Kim, Hee Young, Koyano, Tamotsu, Miyazaki, Shuichi

“…The microstructure and deformation behavior of Ti-23Nb-2Zr-0.7Ta-(0.3–1.8)O (at.%) alloys were investigated in order to elucidate deformation mechanism of Gum…”
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Martensitic transformation and shape memory effect of TiZrHf-based multicomponent alloys by Tasaki, Wataru, Akiyama, Yuzuki, Koyano, Tamotsu, Miyazaki, Shuichi, Kim, Hee Young

“…Novel superelastic alloys and shape memory alloys composed of multi-principal elements with non-toxic and low magnetic susceptibility were developed. Phase…”
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Difference between carbon and nitrogen in thermal stability of metastable 18%Cr-8%Ni austenite by Masumura, Takuro, Tsuchiyama, Toshihiro, Takaki, Setsuo, Koyano, Tamotsu, Adachi, Kazuhiko

“…The effects of carbon and nitrogen addition on the athermal α′-martensitic transformation in metastable 18%Cr-8%Ni austenite are investigated. The thermal…”
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The difference in thermal and mechanical stabilities of austenite between carbon- and nitrogen-added metastable austenitic stainless steels by Masumura, Takuro, Nakada, Nobuo, Tsuchiyama, Toshihiro, Takaki, Setsuo, Koyano, Tamotsu, Adachi, Kazuhiko

“…In order to evaluate the effects of carbon and nitrogen addition on the stability of austenite, athermal and deformation-induced alpha '-martensitic…”
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Effect of Solution Carbon and Nitrogen on the Microstructural Size and Crystallography of Lath Martensite in Fe–N and Fe–C Alloys by Morito, Shigekazu, Iwami, Yuki, Koyano, Tamotsu, Ohba, Takuya

“…Microstructures of lath martensite that contains bcc or bct martensite crystals in Fe–C alloys are known to depend on the carbon content of the alloys. The…”
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Comparison of Microstructure and Hardness between High-carbon and High-nitrogen Martensites by Tsuchiyama, Toshihiro, Inoue, Kurato, Hyodo, Katsutoshi, Akama, Daichi, Nakada, Nobuo, Takaki, Setsuo, Koyano, Tamotsu

“…The microstructure and hardness of martensite in Fe–C and Fe–N alloys with up to 7.5 at% contents of carbon and nitrogen, respectively, were compared. Their…”
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Mechanical Milling Process of High Nitrogen Austenite by Koyano, Tamotsu

“…Nitrogen martensite is ferromagnetic and characterized by a large magnetization.I'2) It can be obtained by quenching nitrogen austenite to the range below Ms…”
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Isothermal Transformation in Fe^|^ndash;N Hypereutectoid Alloy by Nakada, Nobuo, Fukuzawa, Norihide, Tsuchiyama, Toshihiro, Takaki, Setsuo, Koyano, Tamotsu, Iwamoto, Takashi, Omori, Yasuhiro

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Isothermal Transformation in Fe–N Hypereutectoid Alloy by Nakada, Nobuo, Fukuzawa, Norihide, Tsuchiyama, Toshihiro, Takaki, Setsuo, Koyano, Tamotsu, Iwamoto, Takashi, Omori, Yasuhiro

“…In order to understand the mechanism of isothermal transformation of Fe–N alloy, the isothermal transformation microstructure that forms in a wide temperature…”
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Synthesis of a low-bandgap polymer bearing side groups containing phenoxy radicals by Innami, Yu, Kiebooms, Rafaёl H. L., Koyano, Tamotsu, Ichinohe, Masaaki, Ohkawa, Satoshi, Kawabata, Kohsuke, Kawamatsu, Masataka, Matsuishi, Kiyoto, Goto, Hiromasa

“…Poly(isothianaphthene methine) bearing di- tert -butylphenoxide in the side chain was prepared by reacting isothianaphthene and 3,5-di- tert…”
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Characterization of Highly Concentrated Bi Donors Wire-δ-Doped in Si by Murata, Koichi, Neumann, Péter Lajos, Koyano, Tamotsu, Yasutake, Yuhsuke, Nittoh, Koh-ichi, Sakamoto, Kunihiro, Fukatsu, Susumu, Miki, Kazushi

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Isothermal Martensitic Transformation of γ-FeN in a Magnetic Field by Koyano, Tamotsu

“…Isothermal martensitic transformation of the γ-FeN was found to occur in magnetic field at temperatures above the Ms. Molar fraction of martensite…”
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Calibration of a Superconducting Quantum Interference Device Magnetometer by Koyano, Tamotsu

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Effects of Zr and Hf on superelasticity, shape memory effect and microstructure of β-type (Ti–Zr–Hf)–Nb–Sn multi-principal element alloys with low magnetic susceptibility by Tasaki, Wataru, Nakano, Kenta, Sato, Yosuke, Koyano, Tamotsu, Miyazaki, Shuichi, Kim, Hee Young

“…(Ti–Zr–Hf)(97−x)–xNb–3Sn (Ti:(Zr + Hf) = 1:1) alloys were designed for biomedical superelastic alloys with magnetic resonance imaging (MRI) compatibility. The…”
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Synthesis and magnetic properties of polydiphenylamine derivative bearing stable radical groups by Goto, Hiromasa, Koyano, Tamotsu, Ikeda, Hiroshi, Yoshizaki, Ryozo, Akagi, Kazuo

“…Poly[4,4′-diphenylamine (3,5-di- tert-butyl-4-hydroxy)benzylidene] was synthesized with a dehydrative polycondensation by using H 2SO 4 as a catalyst. After…”
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A comparative study on the effects of the ω and α phases on the temperature dependence of shape memory behavior of a Ti–27Nb alloy by Al-Zain, Yazan, Kim, Hee Young, Koyano, Tamotsu, Hosoda, Hideki, Miyazaki, Shuichi

“…While the stress for inducing the martensitic transformation in a Ti–27Nb alloy changed only slightly on aging, the stress at which the martensite phase starts…”
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X-ray Diffraction Studies of Fe-N Bulk-Processed in a Magnetic Field Using Synchrotron Radiation by Ohba, Takuya, Kanou, Nahoko, Koyano, Tamotsu, Ikeda, Hiroshi, Ohtsuka, Hideyuki, Wada, Hitoshi, Kato, Kenichi

“…The volume fractions of α″ phase Fe16N2 in bulk samples were estimated using X-ray diffraction data. The SPring-8 synchrotron radiation facility was utilized…”
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Production of TiNi amorphous/nanocrystalline wires with high strength and elastic modulus by severe cold drawing by Tsuchiya, Koichi, Hada, Yasufumi, Koyano, Tamotsu, Nakajima, Kiyomi, Ohnuma, Masahito, Koike, Tadahiro, Todaka, Yoshikazu, Umemoto, Minoru

“…The microstructure and properties of Ti–50.9 mol.% Ni wires after severe cold drawing were studied. X-ray diffractometry, transmission electron microscopy and…”
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Isothermal Martensitic Transformation of [gamma]-FeN in a Magnetic Field by Koyano, Tamotsu

“…Isothermal martensitic transformation of the γ-FeN was found to occur in magnetic field at temperatures above the Ms. Molar fraction of martensite…”
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Characterization of Highly Concentrated Bi Donors Wire-$\delta$-Doped in Si by Murata, Koichi, Neumann, Péter Lajos, Koyano, Tamotsu, Yasutake, Yuhsuke, Nittoh, Koh-ichi, Sakamoto, Kunihiro, Fukatsu, Susumu, Miki, Kazushi

“…We studied the Bi wire-$\delta$-doping process to achieve a high concentration of Bi donors in Si. Our process has two steps: (i) burial of Bi nanowires in Si…”
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