Search Results - "Shiratori, Tomomi"

Evolution of acoustic softening effect on ultrasonic-assisted micro/meso-compression behavior and microstructure by Hu, Jun, Shimizu, Tetsuhide, Yoshino, Tomoaki, Shiratori, Tomomi, Yang, Ming

“…•Acoustic softening is separated from stress superposition by dynamic force analysis.•Deformation strain plays an important role on the effect of acoustic…”
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Galling-Free Dry Near-Net Forging of Titanium Using Massively Carbon-Supersaturated Tool Steel Dies by Aizawa, Tatsuhiko, Kihara, Takeshi, Shiratori, Tomomi

“…Massively carbon-supersaturated (MCSed) tool steel dies were developed to make galling-free forging products from titanium bar feedstocks in dry conditions…”
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Ultrasonic dynamic impact effect on deformation of aluminum during micro-compression tests by Hu, Jun, Shimizu, Tetsuhide, Yoshino, Tomoaki, Shiratori, Tomomi, Yang, Ming

“…[Display omitted] •Ultrasonic dynamic impact is found as a different effect from acoustic softening.•Critical condition for impact effect is if vibrated punch…”
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Microforming of Stainless Steel Miniature Pump by Additive Sheet-Manufacturing by Aizawa, Tatsuhiko, Shiratori, Tomomi

“…Micro-pump had an integrated structure including the valves, the reservoir, the actuating plates and so forth as designed for each application. Various liquid…”
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Effects of Hot Extrusion Temperature Conditions on the Hardness and Electrical Conductivity of Rapidly Solidified Al-Fe Alloys by Kobayashi, Ryohei, Funazuka, Tatsuya, Maeda, Toru, Shiratori, Tomomi

“…Rapidly solidified Al-Fe alloys produced by hot extrusion are a promising replacement for copper-based electrical conductors because of their light weight…”
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Effects of Material Structure on Stress Relaxation Characteristics of Rapidly Solidified Al-Fe Alloy by Kobayashi, Ryohei, Funazuka, Tatsuya, Maeda, Toru, Shiratori, Tomomi

“…An Al-Fe alloy which was produced by hot extrusion of rapidly solidified powder is a possible solution to substitute copper-based electrical conductor material…”
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Tensile properties and constitutive model of ultrathin pure titanium foils at elevated temperatures in microforming assisted by resistance heating method by Zheng, Qiu, Shimizu, Tetsuhide, Shiratori, Tomomi, Yang, Ming

“…•Tensile testing system assisted by resistance heating is developed for thin foils.•Ultrathin titanium foils show less work hardening n than thick sheets at…”
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Femtosecond Laser Trimming of CVD-Diamond Coated Punch for Fine Embossing by Aizawa, Tatsuhiko, Shiratori, Tomomi, Yoshino, Tomoaki, Inohara, Tadahiko

“…Femtosecond laser machining was employed to trim the surface roughness of diamond coating and to sharpen the edge corner of diamond coated punch toward fine…”
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Free-Forging of Pure Titanium with High Reduction of Thickness by Plasma-Carburized SKD11 Dies by Aizawa, Tatsuhiko, Yoshino, Tomoaki, Suzuki, Yohei, Shiratori, Tomomi

“…A tool steel type SKD11 punch was plasma carburized at 673 K for 14.4 ks at 70 Pa to make carbon supersaturation. This carburized SKD11 punch was employed for…”
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Influence of Strain-Induced Martensitic Transformation of Austenitic Stainless Steel Sheet in Precision Blanking on Cut-Surface Quality by Suzuki, Yohei, Shiratori, Tomomi, Yang, Ming, Murakawa, Masao

“…The main purpose of precision blanking in press stamping is to suppress fracture of the cut surface. The principle is attainable by applying hydrostatic stress…”
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Fine Piercing of Amorphous Electrical Steel Sheet Stack by Micro-/Nano-Textured Punch by Komori, Yukiya, Suzuki, Yohei, Abe, Kohta, Aizawa, Tatsuhiko, Shiratori, Tomomi

“…The periodic nanotexture was superposed to the micro-textured grooves on the side surface of the punch. These grooves with nanotextures were shaped to have…”
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Dry, Cold Forging of Oxygen-Free Copper by Massively Nitrogen-Supersaturated CoCrMo Dies by Aizawa, Tatsuhiko, Funazuka, Tatsuya, Shiratori, Tomomi

“…With the aim of achieving a sustainable society with green manufacturing, every metal-forming process has been changed to a dry process with the use of limited…”
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Dry Cold Forging of Pure Titanium Wire to Thin Plate with Use of β-SiC Coating Dies by Aizawa, Tatsuhiko, Yoshino, Tomoaki, Fukuda, Tatsuya, Shiratori, Tomomi

“…Dense β-SiC coating with 3C-structure was utilized as a dry cold forging punch and core-die. Pure titanium T328H wires of industrial grade II were employed as…”
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Elucidation of Shearing Mechanism of Finish-type FB and Extrusion-type FB for Thin Foil of JIS SUS304 by Numerical and EBSD Analyses by Suzuki, Yohei, Shiratori, Tomomi, Yang, Ming, Murakawa, Masao

“…A numerical analysis using FE (finite element) analysis was performed to clarify the shearing mechanism in the process of extrusion-type fine blanking (FB) for…”
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In Situ Lubrication in Forging of Pure Titanium Using Carbon Supersaturated Die Materials by Aizawa, Tatsuhiko, Funazuka, Tatsuya, Shiratori, Tomomi

“…A new solid lubrication method was proposed for dry forging of pure titanium with high reduction in thickness. A free-carbon tribofilm was formed in situ at…”
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Fabrication of Micro-Punch Array by Plasma Printing for Micro-Embossing into Copper Substrates by Shiratori, Tomomi, Aizawa, Tatsuhiko, Saito, Yasuo, Dohda, Kuniaki

“…Copper substrates were wrought to have micro-grooves for packaging by micro-stamping with use of a AISI316 stainless steel micro-punch array. The micro-texture…”
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Green Forging of Titanium and Titanium Alloys by Using the Carbon Supersaturated SKD11 Dies by Ishiguro, Shunsuke, Aizawa, Tatsuhiko, Funazuka, Tatsuya, Shiratori, Tomomi

“…The carbon-supersaturated SKD11 punch was proposed as a green, or, a galling-free, long-life and low energy-consuming forging tool of pure titanium and…”
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Effect of Punch Surface Microtexture on the Microextrudability of AA6063 Micro Backward Extrusion by Funazuka, Tatsuya, Dohda, Kuniaki, Shiratori, Tomomi, Horiuchi, Syunsuke, Watanabe, Ikumu

“…To apply conventional forming processes to microscale processing, the influence of size effects caused by material properties and friction effects must be…”
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Near-Net Forging of Titanium and Titanium Alloys with Low Friction and Low Work Hardening by Using Carbon-Supersaturated SKD11 Dies by Aizawa, Tatsuhiko, Funazuka, Tatsuya, Shiratori, Tomomi

“…A new near-net forging procedure of titanium and titanium alloys was proposed by using a carbon-supersaturated punch and die. Due to the in situ formation of…”
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Fabrication of Punch and Die Using Plasma-Assisted 3D Printing Technology for Piercing Sheet Metals by Aizawa, Tatsuhiko, Suzuki, Yohei, Yoshino, Tomoaki, Shiratori, Tomomi

“…A pair of punch and die was often fabricated using subtractive manufacturing processes such as milling and other machining processes. However, additive…”
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