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Affiliation Department etc. |
Department of Electrical and Mechanical Engineering
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Title |
Associate Professor |
MAKINO Takehiko
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Graduating School
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-1990.03
University of Toyama Faculty of Engineering Graduated
Graduate School
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-1995.03
Kyoto University Graduate School, Division of Engineering Doctor's Course
Degree
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University of Toyama - Master of Engineering
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Kyoto University - Doctor (Engineering)
Field of expertise (Grants-in-aid for Scientific Research classification)
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Production engineering/Processing studies
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Material processing/Microstructural control engineering
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Physical properties of metals/Metal-base materials
Research Career
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Milecular Dynamics Analysis of Plastic Deformation
(not selected)
Project Year： -
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Microstructure control
(not selected)
Project Year： -
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Molecular Dynamic Analysis of Phase Transformation
(not selected)
Project Year： -
Papers
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Grain size affecting the deformation characteristics via micro-injection upsetting
Walaa Abd-Elaziem, Mohsen A. Hassan, Takehiko Makino, Atef Hamada
Materials Science and Technology ( Taylor & Francis ) 37 ( 10 ) 918 - 929 2021.08 [Refereed]
Research paper (scientific journal) Multiple Authorship
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Microstructure, Mechanical Properties of Extruded Aluminum at Different Ram Speeds in Micro/Meso-Scale
Walaa Abdel-Aziem, Mohsen A. Hassan, Takehiko Makino, Atef Hamada
Metallography, Microstructure, and Analysis ( Springer ) 10 402 - 409 2021.07 [Refereed]
Research paper (scientific journal) Multiple Authorship
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Walaa Abdel-Aziem, Atef Hamada, Takehiko Makino, Mohsen A. Hassan
Journal of Materials Engineering and Performance ( Springer ) 29 6201 - 6211 2020.09 [Refereed]
Research paper (scientific journal) Multiple Authorship
In the present study, Al 1070 alloy pins were processed via micro/meso-scale equal channel angular pressing (channel diameter 1.5 mm, the smallest channel diameter has ever been achieved in mesoscale), up to four passes at room temperature. The microstructure characteristics, i.e., grain size, and misorientation angle distributions were analyzed by high-resolution electron backscatter diffraction on the transverse plane for the ECAPed samples. Tensile properties for such small processed pins were measured by constructed micro/meso-scale tensile machine. The gauge length and the gauge diameter were 2 mm and 1.5 mm, respectively. After the fourth ECAP pass, the results revealed that the microstructure was refined remarkably from 15.5 μm (the initial undeformed sample) to nearly 1.9 μm due to the gradual transformation of the low-angle grain boundaries into high-angle grain boundaries as a result of the occurrence of grain subdivision. Micro/meso-scale ECAP does a significant enhancement in the ultimate tensile strength by 63%, whereas the ductility decreased after the fourth ECAP pass by 47.3% and this is supposed to be ascribed to the continuous decrease in subgrain size. The above results prove that the ECAP process has the potential for obtaining fine grains and improving material tensile properties even in micro/meso-scale.
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Walaa Abdel-Aziem, Atef Hamada,Takehiko Makino, M. Hassan
Materials Science and Technology ( Taylor & Francis ) 36 ( 11 ) 1169 - 1177 2020.05 [Refereed]
Research paper (scientific journal) Multiple Authorship
Commercially AA1070 aluminium was processed by micro/mesoscale equal channel angular pressing (ECAP) up to four passes, via route BC, to achieve fine grain structure and thereby enhancing the mechanical properties. Subsequently, the samples subjected to ECAP processing underwent an extrusion deformation in micro/mesoscale. The microstructural evolution of the deformed structures was followed using electron backscatter diffraction. The findings confirm that a remarkable refinement in the grain structure was observed as a result of the gradual transformation of the low angle grain boundaries into high angle grain boundaries through the grain subdivision mechanism. Consequently, a substantial improvement of the mechanical properties of the extruded material is promoted compared to the samples subjected to ECAP processing.
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Walaa Abdel-Aziem, Atef Hamada, Takehiko Makino, Mohsen A. Hassan
Metals and Materials International ( Springer ) 2019.11 [Refereed]
Research paper (scientific journal) Multiple Authorship
The Micro/meso-forming of commercially pure aluminum, AA1070, processed at room temperature by equal channel angular pressing (ECAP) with a die channel angle of 90° through 4 deformation passes has been conducted. Microstructure features, such as grain size, misorientation angle distributions and the developed texture during the four deformation passes of micro/meso-ECAP have been investigated by Electron backscattering diffraction (EBSD) technique. Then, hardness measurements over the cross-section of the processed samples were correlated with the EBSD analysis. EBSD scans revealed that extended shear bands are formed and represent the microstructural feature induced during micro/meso-forming. Whereas, a non-uniform grain structure consisting of intensive low-angle grain boundaries was obtained in the first pass, a uniform ultrafine-grained structure of high-angle grain boundaries (in the range of 1–2 μm) was achieved at the fourth pass. Consequently, a significant improvement in the hardness value to 65.3%, with respect to the starting material, was achieved due to the enhancement of the fine grain structure. The texture analysis exhibited that the high plastic shear strain associated with micro/meso-scale ECAP was capable to develop a weak texture in the flow plane compared to the starting texture.
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Tribological effects of punch with micro-dimples in blanking under high hydrostatic pressure
K. Kitamura, T. Makino, M. Nawa, S. Miyata
CIRP Annals - Manufacturing Technology 65 249 - 252 2016.06 [Refereed]
Research paper (scientific journal) Multiple Authorship
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Direct measurement of friction force during forming
Takehiko Makino. Yuya Yogo, Toshinari Michimoto, Yohei Takamori
4th Asian Symposium on Materials Processing (ASMP 2015) 39 - 40 2016.03
Research paper (international conference proceedings) Multiple Authorship
Information about distribution and change in friction during forming is required to construct a prediction model. The small deflection of a thin part fabricated at the other side of a flat tool surface is detected using laser reflection to decompose the normal and horizontal (frictional) forces. The locus of laser reflection on a detector showed both components. The values estimated from the locus were fairly close to the measured forces.
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Contact potential difference measurement of adhesion process during micro/meso-scale injection upsetting (共著)
Takehiko Makino, Toshinari Michimoto, Shinpei Moriyama, Tohru Kikuchi
Procedia Engineering 81 444 - 449 2014.11 [Refereed]
Research paper (scientific journal) Multiple Authorship
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Proposal of a Ball Burnishing Method with Forced Rotation (共著)
Futamura, M., Ishitani, A., Makino, T. and Dohda, K.
Tribology Online 6 199 - 206 2011.03 [Refereed]
Research paper (scientific journal) Multiple Authorship
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Frictional Behavior of Ball Rotation with Plastic Deformation (共著)
Futamura, M., Ishitani, A., Makino, T. and Dohda, K.
Tribology Online 6 193 - 198 2011.03 [Refereed]
Research paper (scientific journal) Multiple Authorship
Books
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Micro-Manufacturing (共著)
T. Makino, K. Dohda (Part： Multiple Authorship )
John Wiley & Sons Inc. 2011.07 ISBN: 978-0-470-55644-3
Review Papers
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Tribology in Tool/Material Interface during Forming
Takehiko Makino
Journal of Japanese Society of Tribologists ( Japanese Society of Tribologists ) 63 ( 7 ) 459 - 465 2018.07 [Refereed] [Invited]
Introduction and explanation (scientific journal) Single Author
Presentations
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Compression properties of MD cell structures fitted to free-form surface
Takehiko Makino, Genta Mizuno
The 72th Japanese Joint Conference for the Technology of Plasticity (Online) 2021.10 - 2021.10 The Japan Society for Technology of Plasticity
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Control of wetting behavior by MD surface structure
Takehiko Makino, Ryouta Nogaki
The 72th Japanese Joint Conference for the Technology of Plasticity (Online) 2021.10 - 2021.10 The Japan Society for Technology of Plasticity
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Measurement of contact potential difference of adhesion during pin-on-plate test
Takehiko Makino, Atsushi Endo
The 72th Japanese Joint Conference for the Technology of Plasticity (Online) 2021.10 - 2021.10 The Japan Society for Technology of Plasticity
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Relationship between adhesion and friction force on coated tools in atomistic calculation
Takehiko Makino, Kippei Mori
The 72th Japanese Joint Conference for the Technology of Plasticity (Online) 2021.10 - 2021.10 The Japan Society for Technology of Plasticity
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Quantification of adhesion by sequential process including contact potential measurement in vacuum
Takehiko Makino, Mai Inagaki
The 72th Japanese Joint Conference for the Technology of Plasticity (Online) 2021.10 - 2021.10 The Japan Society for Technology of Plasticity
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Change and distribution of vertical and frictional forces on tool surface during forming by thin-wall displacement-detection method
Takehiko Makino, Keigo Yoshida
The 72th Japanese Joint Conference for the Technology of Plasticity (Online) 2021.10 - 2021.10 The Japan Society for Technology of Plasticity
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Effect of multi-axial forces applied to crystals in MD calculation on compression properties of MD cell structures
Takehiko Makino, Hiroto Kushida
The 72th Japanese Joint Conference for the Technology of Plasticity (Online) 2021.10 - 2021.10 The Japan Society for Technology of Plasticity
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Advancing contact angle of pinned droplet on 3D-printed hydrophobic surfaces
Takehiko Makino, Shiori Kato
The 72th Japanese Joint Conference for the Technology of Plasticity (Online) 2021.10 - 2021.10 The Japan Society for Technology of Plasticity
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Effect of inter - atomic potential on compression properties of MD cell structure -
Takehiko Makino, Hiroto Kushida
The 71th Japanese Joint Conference for the Technology of Plasticity (Online) 2020.11 - 2020.11 The Japan Society for Technology of Plasticity
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Quantitative Analysis of Adhesion Process on Tool Coatings by Contact Potential Difference Measurement in Vacuum
Takehiko Makino, Yuya Watanabe
The 71th Japanese Joint Conference for the Technology of Plasticity (Online) 2020.11 - 2020.11 The Japan Society for Technology of Plasticity