Search Results - "Oikawa, Katsunari"

Void-closing Behavior and Estimation Using Finite Element Analysis via Hydrostatic Integration in Hot Rolling of S10C Steel Plates by Ueshima, Nobufumi, Oikawa, Katsunari

“…The closure of large voids, whose thickness-to-void-height ratio exceeds 0.2, in S10C steel plates during hot rolling was investigated to determine whether…”
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Development of Partial Non-Magnetization Improvement for Silicon Steel and Rotor Evaluation by Hamada, Norihiko, Watarai, Aki, Oikawa, Katsunari, Sugimoto, Satoshi

“…Magnetic flux leakage from the rotor core bridge must be improved in interior permanent magnet motors to improve their performance. The partial…”
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Suppression of Shrinkage Cavity Formation in Silicon Steel by Partial Non-Magnetization by Hamada, Norihiko, Horikawa, Takashi, Oikawa, Katsunari, Sugimoto, Satoshi

“…Internal permanent magnet motors suffer from leakage flux in their rotor core bridges, which can be removed through the partial non-magnetization of the…”
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Thermodynamic Reassessment of the Binary Cu-Sn, Cu-P, and Sn-P and Ternary Cu-Sn-P Systems by Oikawa, Katsunari, Ueshima, Nobufumi

“…The Cu-Sn-P phase diagram is essential for understanding the metallurgical phenomena of Cu-Sn bronze, brazing filler metals, and Sn-Cu lead-free solder. In…”
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Experimental Investigation and Thermodynamic Assessment of Ni–B and Ni–B–C Systems by Oikawa, Katsunari, Ueshima, Nobufumi

“…As nickel-based heat-resistant alloys contain small amount of boron and carbon, it is imperative to study their phase diagrams and thermodynamic properties to…”
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Mechanical and thermoelectric properties of iridium-ruthenium alloy grown by the micro-pulling-down method by Murakami, Rikito, Kamada, Kei, Oikawa, Katsunari, Yoshikawa, Akira

“…•Ir-20Ru alloy wire was first time grown by the micro-pulling-down (μ-PD) method.•The wire fabrication of 47 m is a record length in the μ-PD method.•Annealing…”
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Influence of hot-working conditions on grain growth of superalloy 718 by Aoki, Chuya, Ueno, Tomonori, Ohno, Takehiro, Oikawa, Katsunari

“…[Display omitted] The grain growth behavior of superalloy 718 was investigated using high-temperature compression tests and subsequent heat treatment. Abnormal…”
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Suppression of Solidification Defects in Partial Non-Magnetization Improvement for Silicon Steel by Hamada, Norihiko, Horikawa, Takashi, Mitarai, Hironari, Oikawa, Katsunari, Sugimoto, Satoshi

“…Leakage flux in rotor core bridges is a problem specific to interior permanent-magnet (IPM) motors. It is widely known that the partial non-magnetization of…”
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Experimental investigations of fcc/bcc phase equilibria in the Cr–Mn–Ni ternary system by Li, Haoge, Ruan, Jingjing, Ueshima, Nobufumi, Oikawa, Katsunari

“…Cr–Mn–Ni ternary alloys have been experimentally studied. Three different isothermal sections have been characterized at 1000 °C, 1100 °C and 1200 °C via…”
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High Temperature Deformation and Microstructure Evolution of Ni–Co Base Superalloy TMW-4M3 by Hara, Takaaki, Ishida, Toshiki, Oikawa, Katsunari

“…The high temperature deformation and microstructure evolution of Ni–Co base superalloy TMW-4M3 during the isothermal forging process were studied. A uniform…”
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Development of Rotor Core with High Magnetic Flux by Partial Non-Magnetic Improvement of Silicon Steel by Hamada, Norihiko, Watarai, Aki, Mitarai, Hironari, Oikawa, Katsunari, Sugimoto, Satoshi

“…Flux leakage in the rotor core bridges is a problem specific to interior permanent magnet motors and has been unsolved till date. It is widely known that if…”
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Thermodynamic and atomic mobility assessment of the Co–Fe–Mn system by Pendem, Sri Pragna, Ueshima, Nobufumi, Oikawa, Katsunari, Tsukada, Yuhki, Koyama, Toshiyuki

“…The phase equilibria and diffusivity of Co–Fe–Mn system were investigated using alloy equilibrium and the diffusion couple technique. Furthermore,…”
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Diffusion Behavior of Al in Zn Coating Layer of Zn-0.2mass%Al Hot-dip Galvanized Steel Sheets with and without Temper Rolling during Aging after Production by Hoshino, Katsuya, Oikawa, Katsunari, Okumura, Yusuke, Taira, Shoichiro

“…It is known that Al added to the Zn coating layer of hot-dip galvanized steel sheets (HDG) diffuses to the surface at room temperature and forms Al-based…”
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High-Temperature Mechanical Properties of NaCl–Na2CO3 Salt-Mixture Removable Cores for Aluminum Die-Casting by Oikawa, Katsunari, Sakakibara, Kazuhiro, Yamada, Youji, Anzai, Koichi

“…The NaCl–Na2CO3 salt mixture is proposed as a water-soluble core material for aluminum die-casting processes. The mechanical properties and microstructures of…”
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Investigations on the Phase Transformations, Equilibria and Athermal ω in Ni-Ga-Cr Ternary System by Ruan, Jingjing, Chen, Yuyuan, Kobayashi, Kosei, Ueshima, Nobufumi, Oikawa, Katsunari

“…In the present work, the phase equilibria of the Ni-Ga-Cr ternary system at 850, 1000 and 1150 °C were experimentally investigated to provide the essential…”
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Phase Equilibria and Microstructure on γ′ Phase in Co-Ni-Al-W System by Shinagawa, Kazuya, Omori, Toshihiro, Sato, Jun, Oikawa, Katsunari, Ohnuma, Ikuo, Kainuma, Ryosuke, Ishida, Kiyohito

“…Phase equilibria between the γ and γ′ phases at 900°C in the Co-(10–70)Ni-Al-W system were determined by electron probe microanalysis (EPMA) and X-ray…”
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Segregation Mechanism of Al-based Oxides on Surface of Zn-0.2mass%Al Hot-dip Galvanized Steel Sheets by Hoshino, Katsuya, Oikawa, Katsunari, Tanimoto, Wataru, Nagoshi, Masayasu, Koba, Masaki

“…It is known that the Al added to the Zn coating layer of hot-dip galvanized steel sheets (HDG) segregates on the surface of temper-rolled HDG as Al-based…”
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Phase equilibria and thermodynamic calculation of the Co–Ta binary system by Shinagawa, Kazuya, Chinen, Hibiki, Omori, Toshihiro, Oikawa, Katsunari, Ohnuma, Ikuo, Ishida, Kiyohito, Kainuma, Ryosuke

“…Experimental investigation and thermodynamic evaluation of the Co–Ta binary phase diagram was carried out. Equilibrium compositions obtained in two-phase…”
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Ductility enhancement by boron addition in Co–Al–W high-temperature alloys by Shinagawa, Kazuya, Omori, Toshihiro, Oikawa, Katsunari, Kainuma, Ryosuke, Ishida, Kiyohito

“…The mechanical properties of several B-free and B-doped Co–Al–W superalloys with different volume fractions of the Co 3(Al,W)-γ′ phase were examined by…”
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Observation of large magnetoresistance of magnetic Heusler alloy Ni50Mn36Sn14 in high magnetic fields by Koyama, Keiichi, Okada, Hironari, Watanabe, Kazuo, Kanomata, Takeshi, Kainuma, Ryosuke, Ito, Wataru, Oikawa, Katsunari, Ishida, Kiyohito

“…The magnetic and electrical properties on magnetic Heusler alloy Ni50Mn36Sn14 were studied in magnetic fields up to 18T in 4.2–270K temperature range. It was…”
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