Tomoya Aoba

J-GLOBAL         Last updated: Jun 26, 2019 at 17:37
 
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Name
Tomoya Aoba
Affiliation
Kisarazu National College of Technology
Section
Department of Mechanical Engineering
Research funding number
50757143

Published Papers

 
池田光志, 樫原恵蔵, 青葉知弥, 小林正和, 三浦博己
軽金属   69(4) 228‐234   Apr 2019   [Refereed]
M.Kobayashi, T.Goto, T.Aoba, H.Miura
Material Characterization   154 424-436   Jun 2019   [Refereed]
Furuta Shougo, Kobayashi Masakazu, Uesugi Kentaro, Takeuchi Akihisa, Aoba Tomoya, Miura Hiromi
MATERIALS   11(8) 1308   Aug 2018   [Refereed]
H. Miura, M. Kobayashi, T. Aoba, H. Aoyama, T. Benjanarasuth
Materials Science and Engineering A   731 603-608   Jul 2018   [Refereed]
© 2018 Elsevier B.V. Commercially pure Ti grade 2 was multi-directionally forged (MDFed) at room temperature. MDFing could be successfully carried out without any cracking to a cumulative strain of ΣΔε = 2.0. Ultrafine-grained (UFGed) structure gr...
M. Kobayashi, T. Aoba, H. Miura
Procedia Manufacturing   15 161-167   Jul 2018   [Refereed]
Hiromi Miura, Keiichiro Minami, Tomoya Aoba, Masakazu Kobayashi
Procedia Manufacturing   15 1533-1540   Jul 2018   [Refereed]
青葉 知弥, 上野 宗太郎, 小林 正和, 三浦 博己
軽金属   68(7) 339-345   Jul 2018   [Refereed]
Tomoya Aoba, Sotaro Ueno, Masakazu Kobayashi, Hiromi Miura
Keikinzoku/Journal of Japan Institute of Light Metals   68(7) 339-345   Jan 2018   [Refereed]
© 2018 The Japan Institute of Light Metals. The microstructure and mechanical properties of 7075 and 7N01 alloys after multi-directional forging (MDFing) and subsequent aging were systematically investigated. The number density of the precipitates...
Aoba Tomoya, Kobayashi Masakazu, Miura Hiromi
MATERIALS TRANSACTIONS   59(3) 373-379   2018   [Refereed]
谷啓貴, 青葉知弥, 小林正和, 高橋明宏, 三浦博己
軽金属   67(8) 355‐360-360   Aug 2017   [Refereed]
© 2017 The Japan Institute of Light Metals. A hot-extruded AZ80 magnesium (Mg) alloy was multi-directionally forged (Multi-Directionally Forged/MDFed) under decreasing temperature conditions from 673 K down to 433 K to cumulative strain of Σδϵ=5.6...
Tomoya Aoba, Tomoya Aoba, Tsuneo Suzuki, Tadachika Nakayama, Hisayuki Suematsu, Koichi Niihara, Maarit Karppinen
Japanese Journal of Applied Physics   56(8) 083101   Aug 2017   [Refereed]
© 2017 The Japan Society of Applied Physics. We demonstrate that the irreversibility field characteristics of high-Tc superconductors are not necessarily enhanced by decreasing the thickness of the non-superconducting blocking block between adjace...
S. Furuta, M. Kobayashi, K. Uesugi, A. Takeuchi, T. Aoba, H. Miura
Materials Characterization   130 237-242   Aug 2017   [Refereed]
© 2017 The difference of the three-dimensional morphology of eutectic Si particles has been investigated in Al-7mass%Si cast alloys changing trace P and Sr contents by means of synchrotron radiation nano-tomography with Zernike phase plate. Fibrou...
青葉知弥, 小林正和, 三浦博己
軽金属   67(7) 277‐283-283   Jul 2017   [Refereed]
Tomoya Aoba, Masakazu Kobayashi, Hiromi Miura
Materials Science and Engineering A   700 220-225   Jul 2017   [Refereed]
© 2017 Elsevier B.V. The effects of natural aging for a long period of time (2.4 years) and as well as artificial aging on the mechanical properties and microstructure of multi-directionally forged (MDFed) 7075 aluminum alloys were systematically ...
Tomoya Aoba, Masakazu Kobayashi, Hiromi Miura
Keikinzoku/Journal of Japan Institute of Light Metals   67(7) 277-283   Jan 2017   [Refereed]
© 2017 The Japan Institute of Light Metals. The microstructural evolution and changes in mechanical properties of 6000 series aluminum alloys during multi-directional forging (MDFing) and artificial aging were systematically investigated. The stre...
Shinoda Satoshi, Aoba Tomoya, Suzuki Tsuneo, Nakayama Tadachika, Suematsu Hisayuki, Niihara Koichi
JAPANESE JOURNAL OF APPLIED PHYSICS   56(1)    Jan 2017   [Refereed]
Tomoya Aoba, Tomoya Aoba, Tomoya Aoba, Tsuneo Suzuki, Tadachika Nakayama, Hisayuki Suematsu, Koichi Niihara, Maarit Karppinen
Materials Chemistry and Physics   177 67-72   Jul 2016   [Refereed]
© 2016 Elsevier B.V. All rights reserved. We prepared two new phases of high-T c superconductors with water molecules as the main constituents of the charge-reservoir block and refined the synthesis method for another phase. These water-containin...
Satoshi Shinoda, Tomoya Aoba, Tsuneo Suzuki, Tadachika Nakayama, Hisayuki Suematsu, Koichi Niihara
Japanese Journal of Applied Physics   55(2)    Feb 2016   [Refereed]
© 2016 The Japan Society of Applied Physics. Novel Sr 2 (Ca 1-x Sr x )Cu 2 O y samples of various x values were successfully synthesized at a pressure of 5.5 GPa at 850-1150 °C using a highpressure apparatus. The synthesized samples have a body-c...
Tomoya Aoba, Tomoya Aoba, Tomoya Aoba, Taneli Tiittanen, Hisayuki Suematsu, Maarit Karppinen
Journal of Solid State Chemistry   233 492-496   Jan 2016   [Refereed]
© 2015 Elsevier Inc. All rights reserved. We have stabilized two new cubic (3C structured) A2B′B″O6-type double-perovskite phases, Ba2CoSbO6 and Ba2ZnTeO6, by means of a high-pressure heat-treatment of corresponding hexagonal (6H and 12R structure...
AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
Jpn J Appl Phys   53(2S) 02BC06.1-02BC06.6   Feb 2014   [Refereed]
Novel compounds of CxSr2CaCu2Oz and CxSr2Ca3Cu4Oz were derived by annealing high pressure-synthesized samples of Sr2Ca (n-1)CunOy (n = 2, 4) at 350°C for 30min in air. Energy-dispersive X-ray spectroscopy and electron energy loss spectroscopy indi...
Shunki Shibaoka, Tomoya Aoba, Tsuneo Suzuki, Tadachika Nakayama, Hisayuki Suematsu, Koichi Niihara
Japanese Journal of Applied Physics   53(2)    Feb 2014   [Refereed]
(Cu1-xCx)Sr2CaCu2O 7-δ samples with precisely controlled oxygen contents (δ = 0.10-0.35) were successfully synthesized under a pressure of 5.5GPa and followed by annealing in He gas at various temperatures. The oxygen content of an as-synthesized ...
SHIBAOKA SHUNKI, AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
Jpn J Appl Phys   53(2S) 02BC09.1-02BC09.4   Feb 2014   [Refereed]
AOBA TOMOYA, KATO TAKAHITO, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
J Appl Phys   114(19) 193903-193903-6   Nov 2013   [Refereed]
We prepared Sr2Ca(n-1)CunOy (n = 3-7) phases using a high-pressure apparatus. In the Sr-Ca-Cu-O system, the n = 5-7 members of a homologous series, Sr2Ca(n-1)Cu nOy, were prepared as mixed phases for the first time. The c-axis length increases lin...
AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
Jpn J Appl Phys   52(7,Issue 1) 073101.1-073101.5   Jul 2013   [Refereed]
A novel compound was derived by annealing a high-pressure-synthesized sample of Sr2Ca2Cu3Oy at 350°C for 30 min in air. Energy-dispersive X-ray spectroscopy and electron energy loss spectroscopy indicated that the composition of Sr, Ca, and Cu was...
AOBA TOMOYA, BIZEN TAKESHI, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, KATSUMATA TETSUHIRO, INAGUMA YOSHIYUKI, NIIHARA KOICHI
Jpn J Appl Phys   50(1,Issue 3) 01BE15.1-01BE15.4   Jan 2011   [Refereed]
Samples of a CuBa2Ca2Cu2O 2+δ superconductor were synthesized under a high pressure of 5 GPa at 1100-1200 °C for 30 min using precursors produced by solid-state reaction and polymerized complex methods. Compared with the precursors prepared by the...

Conference Activities & Talks

 
Fabrication of Ultrafine-grained and High-strength Mg Alloy Tube by MDF and Warm Extrusion
H. Miura, K. Minami, T. Aoba, and M. kobayashi
BIT's 5th Annual World Congress of Smart Materials-2019   Mar 2019   
小林正和, 青葉知弥, 三浦博己
日本銅学会講演大会講演概要集   3 Nov 2018   
池田光志, 樫原恵蔵, 青葉知弥, 小林正和, 三浦博巳
軽金属学会大会講演概要   10 Oct 2018   
小林正和, 谷口皓平, 古田将吾, 青葉知弥, 三浦博己
軽金属学会大会講演概要   10 Oct 2018   
青葉知弥, 小林正和, 三浦博己, 渡邊千尋
軽金属学会大会講演概要   10 Oct 2018   
古田将吾, 小林正和, 青山俊三, 上坂直人, 谷口晧平, 青葉知弥, 三浦博己
日本鋳造工学会全国講演大会講演概要集   5 May 2018   
谷口皓平, 古田将吾, 小林正和, 青葉知弥, 三浦博己
日本鋳造工学会全国講演大会講演概要集   5 May 2018   
澤秀太郎, 渡辺千尋, 門前亮一, 青葉知弥, 三浦博巳
軽金属学会大会講演概要   26 Apr 2018   
青葉知弥, 小林正和, 三浦博己
軽金属学会大会講演概要   26 Apr 2018   
Development of local inhomogeneous strain and microstructure during cold rolling in Al-Mg alloys by using 3D marker tracking method
M. Kobayashi, M. Nakayama, T. Aoba and H. Miura
Thermec2018   Jul 2018   
Microstructure and mechanical properties of plates and tubes warm extruded AZ80Mg alloy fabricated by MDF in advance
H. Miura, K. Minami, T. Aoba, M. Kobayashi
Metal Forming 2018   Sep 2018   
Effect of morphology changes in eutectic Si particles by heat treatment on mechanical property in Al-10%Si cast alloy
S. Furuta, M. Kobayashi, T. Aoba, H. Miura
ICAA2018   Jul 2018   
Microstructural evolution and change in mechanical properties of multi-directionally forged Al alloy
T. Aoba, M. Kobayashi, H. Miura
ICAA2018   Jul 2018   
Investigation of Mechanical properties in AL-7%Si cast alloys with changing the eutectic Si particles by trace P and Sr
M. Kobayashi, S. Furuta, K. Taniguchi, T. Aoba and H. Miura
ICAA2018   Jul 2018   
Development of internal inhomogeneous plastic strain during cold rolling in Al-Mg alloys
M. Kobayashi, T. Aoba and H. Miura
Metal Forming 2018   Sep 2018   
Development of three-dimensional inhomogeneous plastic strain during cold rolling in Al-Mg alloys
M. Kobayashi, T. Aoba and H. Miura
4th International Congress on 3D Materials Science (3DMS) 2018   Jun 2018   
Water Molecule Absorption in Sr2Ca2Cu3Oy Superconductors and Enhancement of Critical Current Density Properties
H. Suematsu, T. Nagumo, A. Sklyarova, T. Aoba, G. Thorogood, A. Fujimoto, T. M. D. Do, T. Nakayama and K. Niihara
13th INTERNATIONAL CONFERENCE ON THE PHYSICAL PROPERTIES AND APPLICATION ON ADVANCED MATERIALS   Sep 2018   
Microstructure and Mechanical Properties of AZ80Mg Plates Fabricated by Combined Multi-Directional Forging and Warm Extrusion
H. Miura, K. Minami, T. Aoba, M. Kobayashi, J. J. Jonas
GEMS2018   Aug 2018   
Synchrotron Radiation Micro and Nano Tomography for Materials Science
M. Kobayashi, T. Aoba and H. Miura
GEMS2018   Aug 2018   
Cu-Be合金多軸鍛造材の微視組織と強度に及ぼす微量添加Zrの影響
坂田 信道、青葉 知弥、小林 正和、三浦 博己、村松 尚国、石川 貴浩
材料フォーラム   Nov 2017   
低炭素鋼の熱間変形及び動的再結晶に及ぼす添加Siの影響
間根山 大、青葉 知弥、小林 正和、三浦 博己
材料フォーラム   Nov 2017   
IF鋼冷間圧延板の静的再結晶挙動に及ぼす初期粒形と焼鈍プロセスの影響
大山 薫、青葉 知弥、小林 正和、三浦 博己、南 秀和、船川 義正
材料フォーラム   Nov 2017   
高強度Cu-Ni-Si合金の曲げ加工性に及ぼす表面ブラッシング深さの影響
綱澤 和成、青葉 知弥、小林 正和、三浦 博己
材料フォーラム   Nov 2017   
降温多軸鍛造で作製した超微細粒AZ80Mg合金の押出成形に関する研究
南 佳一郎、青葉 知弥、小林 正和、三浦 博己
軽金属学会東海支部   Nov 2017   
降温多軸鍛造AZ61Mg合金の衝撃破壊挙動に関する研究
齊藤 哲郎、青葉 知弥、小林 正和、三浦 博己
軽金属学会東海支部   Nov 2017   
古田将吾, 小林正和, 青葉知弥, 三浦博巳
軽金属学会大会講演概要   4 Oct 2017   
青葉知弥, 小林正和, 三浦博己
軽金属学会大会講演概要   4 Oct 2017   
渡辺千尋, 門前亮一, 青葉知弥, 三浦博己
日本金属学会講演概要(CD-ROM)   23 Aug 2017   
小林正和, 上野宗太郎, 青葉知弥, 三浦博己
日本金属学会講演概要(CD-ROM)   23 Aug 2017   
中山将徳, 小林正和, 青葉知弥, 三浦博己
軽金属学会大会講演概要   20 Apr 2017   
青葉知弥, 小林正和, 三浦博己
軽金属学会大会講演概要   20 Apr 2017   
古田将吾, 小林正和, 青葉知弥, 三浦博己
軽金属学会大会講演概要   20 Apr 2017   
青葉知弥, 小林正和, 三浦博己, 渡邊千尋
日本金属学会講演概要(CD-ROM)   1 Mar 2017   
Synthesis of cuprate superconductors under high oxygen partial pressure and improvement of the critical current density properties by insertion of water molecules
H. Suematsu, A. Sklyarova, T. Nagumo, H. Shinoda, T. Aoba, T. Suzuki, T. Nakayama and K. Niihara
41st International Conference and Expo on Advanced Ceramics and Composites   Jan 2017   
Investigation of inhomogeneous deformation and microstructure during cold rolling in Al-Mg alloys by using 3D marker tracking method
M. Kobayashi, M. Nakayama, T. Aoba and H. Miura
ICOTOM18   Nov 2017   
Microstructural evolution and change in mechanical properties of 6063Al alloy by multi-directional forging and subsequent aging
T. Aoba, M. Kobayashi, H. Miura
International Research Center on Giant Straining for Advanced Materials   Aug 2017   
Internal local strain distribution during cold rolling in Al-Mg alloys
M. Kobayashi, M. Nakayama, T. Aoba and H. Miura
International workshop on fundamental research for science and technology 2017   Sep 2017   
小林正和, 中山将徳, 青葉知弥, 三浦博己
軽金属学会大会講演概要   5 Oct 2016   
青葉知弥, 小林正和, 三浦博己, 渡邊千尋
軽金属学会大会講演概要   5 Oct 2016   
山口達也, 青葉知弥, 小林正和, 三浦博己, 木村圭佑
軽金属学会大会講演概要   5 Oct 2016   
青葉知弥, 小林正和, 三浦博己, 渡邊千尋
日本金属学会講演概要(CD-ROM)   7 Sep 2016   
田盛惇也, 小林正和, 青葉知弥, 三浦博己
軽金属学会大会講演概要   28 Apr 2016   
Synchrotron radiation micro and nano tomography for material science
M. Kobayashi, H. Miura, T. Aoba
The 3rd International Conference of Global Network for Innovative TechnologyA   Jan 2016   
Effect of severe plastic deformation on the precipitation hardening of Al alloy
T. Aoba, M. Kobayashi, H. Miura
The 3rd International Conference of Global Network for Innovative TechnologyA   Jan 2016   
Synthesis of Sr2Can-1CunOy Phases as Precursors to Intercalate Organic Molecules for Development of Novel High-Tc Superconductors
H. Suematsu, T. Aoba, T. Nagumo, H. Shinoda, G. Thorogood, M. Karppinen, T. Suzuki, T. Nakayama and K. Niihara
80th INTERNATIONAL SEMINAR ON EMERGING INNOVATIONS IN CERAMICS, REFRACTORIES, GLASS   Nov 2016   
X-Ray Nano-Tomography Observation of Eutectic Si Particles in Al-7%Si Cast Alloys with Trace Elements
S. Furuta, M. Kobayashi, M. Toyoda, K. Uesugi, A. Takeuchi, H. Miura, T. Aoba
9th Pacific Rim International Conference on Advanced Materials and Processing   Aug 2016   
Influence of Multi-Directional Forging on Age-Hardening in A6063 Alloy
T. Aoba, M. Kobayashi, H. Miura
9th Pacific Rim International Conference on Advanced Materials and Processing   Aug 2016   
Synthesis and superconducting properties of solid-solution Sr2(SrxCa1-x)Cu2Oy (x=0-1)
S. Satoshi, T. Aoba, T. Suzuki, T. Nakayama, H. Suematsu, K. Niihara
The 5th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies   2015   
Crystal structure determination of the high Tc superconductor Sr2Ca2Cu3OY
G. J. Thorogood, H. Suematsu, T. Aoba
2nd Asia Oceania Conference on Neutron Scattering   2015   
Insertion of Water Molecules in Sr2Ca2Cu3Oy to Improve their Critical Current Density Properties
H. Suematsu, T. Nagumo, H. Shinoda, T. Aoba, T. Suzuki, T. Nakayama and K. Niihara
5th International symposium on advanced ceramics and technology for sustainable energy applications toward a low carbon society   2015   
AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
応用物理学会秋季学術講演会講演予稿集(CD-ROM)   1 Sep 2014   
AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
応用物理学会春季学術講演会講演予稿集(CD-ROM)   3 Mar 2014   
AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
応用物理学会秋季学術講演会講演予稿集(CD-ROM)   31 Aug 2013   
SHIBAOKA SHUNKI, AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
応用物理学会秋季学術講演会講演予稿集(CD-ROM)   31 Aug 2013   
AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
応用物理学会春季学術講演会講演予稿集(CD-ROM)   11 Mar 2013   
Synthesis of CxSr2Ca(n-1)CunOy superconductor under ambient pressure using a precursor of Sr2Ca(n-1)CunOz [n=2-4]
T. Aoba, T. Suzuki, T. Nakayama, H. Suematsu, K. Niihara
The 4th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologie   2013   
Synthesis of CxSr2Ca(n-1)CunOy Layered Cuprates under Ambient Pressure using Sr2Ca(n-1)CunOy Precursors
H. Suematsu, T. Aoba, T. Suzuki, T. Nakayama and K. Niihara
4th International Symposium on Advanced Ceramics and Technology for Sustainable Energy Applications toward a Low Carbon Society   2013   
AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
応用物理学会学術講演会講演予稿集(CD-ROM)   27 Aug 2012   
High pressure synthesis of Sr2Ca2Cu3Oy and formation of its derivative phase in water
H. Suematsu, T. Aoba, T. Suzuki, T. Nakayama and K. Niihara
The 1st International GIGAKU conference   2012   
AOBA TOMOYA, SUZUKI TSUNEO, NAKAYAMA TADACHIKA, SUEMATSU HISAYUKI, NIIHARA KOICHI
応用物理学会学術講演会講演予稿集(CD-ROM)   16 Aug 2011   
AOBA TOMOYA, SATO IWAO, MORI NATSUKI
応用物理学関係連合講演会講演予稿集   27 Mar 2008