TOKUNAGA Toko

写真a

Affiliation Department

Department of Physical Science and Engineering
Department of Physical Science and Engineering

Title

Assistant Professor

External Link

Degree

  • 博士(工学) ( 2015.06   北海道大学 )

  • PhD ( 2015.06   AGH科学技術大学 )

From School

  • Hokkaido University   Graduate School of Engineering,   Graduated

    2013.04 - 2015.06

  • AGH University of Science and Technology   Faculty of Metals Engineering and Industrial Computer Science   Graduated

    2013.04 - 2015

  • Hokkaido University   Graduate School of Engineering   Graduated

    2011.04 - 2013.03

  • Hokkaido University   Faculty of Engineering   Graduated

    2007.04 - 2011.03

 

Papers

  • Effects of cementite particles on impact properties in high-hardness hypereutectoid steels Reviewed

    T. Tokunaga, K. Yamamoto, Y. Minamino, T. Takayama, T. Sugimoto, K. Hagihara

    ISIJ International   64 ( 2 )   2024

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  • Kink-band formation in the directionally-solidified Mg/LPSO two-phase alloys Reviewed

    T. Tokunaga, K. Hagihara, M. Yamasaki, T. Mayama, K. Yamamoto, H. Narimoto, T. Kida, Y. Kawamura, T. Nakano

    Science and Technology of Advanced Materials   2022.10

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1080/14686996.2022.2137696

    DOI: https://doi.org/10.1080/14686996.2022.2137696

  • Microstructural factors governing the significant strengthening of Al/Al2Cu mille-feuille structured alloys accompanied by kink-band formation Reviewed International coauthorship

    K. Hagihara, T. Tokunaga, S. Ohsawa, S. Uemichi, K. Guan, D. Egusa, E.Abe

    International Journal of Plasticity   158   103419   2022.09

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1016/j.ijplas.2022.103419

    DOI: https://doi.org/10.1016/j.ijplas.2022.103419

  • 青森県量子科学センターにおけるBNCT

    Toko Tokunaga, Shingo Hachinohe, Hiroyoshi Kikuchi, Toyomi Baba

    36 ( 2 )   62 - 63   2021.02

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    Publishing type:Research paper (scientific journal)  

  • Development of High Corrosion- and Wear-Resistant Al-Si Alloy Coating on AZ80 Mg Alloy by Hot Extrusion Reviewed

    Toko Tokunaga, Kazushi Sotomoto, Munekazu Ohno, Kiyotaka Matsuura

    Journal of Materials Engineering and Performance   29   6355 - 6362   2020

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Microstructure refinement and mechanical properties improvement of Al-Si-Fe alloys by hot extrusion using a specially designed high-strain die Reviewed

    Sakow Shino, Toko Tokunaga, Munekazu Ohno, Kiyotaka Matsuura

    Journal of Materials Processing Technology   277 ( 116447 )   1 - 9   2020

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Enhancement of ductility for Al–Si–Fe alloy by refining β phase with a novel ball-die extrusion Reviewed

    Toko Tokunaga, Haruki Inubushi

    SN Applied Sciences   1 ( 10 )   1334   2019.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s42452-019-1377-4

    Other Link: http://link.springer.com/article/10.1007/s42452-019-1377-4/fulltext.html

  • Microstructure evolution during superplastic deformation of an Al-coated Mg alloy sheet Reviewed

    T. Tokunaga, M. Ohno

    Journal of Alloys and Compounds   805   436 - 443   2019

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Fabrication of Al-Coated Mg-Li Alloy Sheet and Investigation of Its Properties Reviewed

    T. L. Zhang, T. Tokunaga, M. Ohno, M. L. Zhang, K. Matsuura

    Acta Metallurgica Sinica (English Letters)   32   169 - 177   2019

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    Language:English   Publishing type:Research paper (scientific journal)  

  • Coating on magnesium alloy with super duralumin by hot extrusion and evaluation of its surface properties Reviewed

    Toko Tokunaga, Kazushi Sotomoto, Munekazu Ohno, Kiyotaka Matsuura

    Materials Transactions   59 ( 3 )   432 - 436   2018

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japan Institute of Metals (JIM)  

    The poor corrosion resistance of Mg alloys, which is well known as one of the lightest structural metal materials, limits a wide use of these alloys. In order to dramatically increase not only the corrosion resistance but also the surface hardness of Mg alloys (AZ80), coating with A2024 Al alloy by hot extrusion has been attempted in this study. The coating was successfully realized by hot extrusion of a Mg alloy (AZ80) billet together with an Al alloy plate placed between the billet and the extrusion die. The A2024 Al alloy-coated Mg alloy exhibited an excellent corrosion resistance and no weight loss was observed after immersion in a 5 mass% HCl aqueous solution for 10 min while a weight loss of about 1500 g・m−2 was observed in case of AZ80 Mg alloy without coating under the same condition. The surface hardness of the coated alloy was increased to about 85 HV by aging for 144 h at room temperature after solution treatment for 3 h at 673 K.

    DOI: 10.2320/matertrans.M2017317

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Misc

  • Al,Mg基先進的高機能性構造材料の創製に関する研究 Invited

    徳永透子

    72   618 - 618   2022.10

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (other)  

  • 芯のある研究者を目指して

    徳永透子

    54 ( 12 )   639   2015

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    Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)  

Presentations

  • Ti基共晶合金の微細組織制御による高強度化

    徳永 透子,米村 拓哉,萩原 幸司

    日本機械学会 M&M2023 材料力学カンファレンス  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Oral presentation (general)  

  • Multimodal微細組織を有するMg-Y-Zn合金の引張変形挙動

    山崎 倫昭,堀口 皓匠,西本 宗矢,萩原 幸司,徳永 透子,眞山 剛

    日本機械学会 M&M2023 材料力学カンファレンス  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 種々の押出Mg合金における組織と力学特性の相関

    萩原 幸司,眞山 剛,Stefanus Harjo,徳永 透子,山本 和輝,杉田 三佳,Wu Gong,山崎 倫昭

    日本機械学会 M&M2023 材料力学カンファレンス  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 高硬度高靭性過共析鋼の熱処理条件と力学特性の相関

    中北颯,徳永透子,萩原幸司,山本 幸治,杉本 隼之,南埜 宜俊

    日本鉄鋼協会 2023年第186回秋季講演大会  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 超高強度鉄鋼材料の熱処理に伴う組織形成過程の解明

    原田 直哉,徳永 透子,萩原 幸司,山本 幸治,杉本 隼之,南埜 宜俊

    日本鉄鋼協会 2023年第186回秋季講演大会  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Poster presentation  

  • 不均一組織を有するMg-Y-Zn合金押出材の引張・圧縮変形挙動の調査 International coauthorship

    堀口 皓匠、山崎 倫昭、眞山 剛、萩原 幸司、徳永 透子、Harjo Stefanaus、Drozdenko Daria、Mathis Kristian

    日本金属学会2023年秋期(第173回)講演大会  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Oral presentation (general)  

  • レーザ粉末床溶融結合による六方晶系合金の結晶集合組織制御

    木澤 雄太、小笹 良輔、徳永 透子、萩原 幸司、中野 貴由

    日本金属学会2023年秋期(第173回)講演大会  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Oral presentation (general)  

  • Ti基複相ハイエントロピーミルフィーユ合金の開発、高機能化の検討

    中田 龍之介、萩原 幸司、徳永 透子

    日本金属学会2023年秋期(第173回)講演大会  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Poster presentation  

  • “非ラメラ型”複相材料の局所変形誘導による配向制御と機能性向上

    廣野 零二、萩原 幸司、徳永 透子、眞山 剛

    日本金属学会2023年秋期(第173回)講演大会  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Poster presentation  

  • Mg-Y-Znマルチモーダル押出材の圧縮変形機構解析

    杉田 三佳、萩原 幸司、徳永 透子、眞山 剛、山崎 倫昭

    日本金属学会2023年秋期(第173回)講演大会  2023.09 

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    Event date: 2023.09

    Language:Japanese   Presentation type:Poster presentation  

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Awards

  • 第15回軽金属女性未来賞受賞

    2023.11   一般社団法人 軽金属学会  

  • 2023年度名古屋工業大学「女性が拓く未来賞」

    2023.09   名古屋工業大学  

  • 令和4年度日本マグネシウム協会賞

    2023.06   一般社団法人日本マグネシウム協会  

  • 第40回軽金属奨励賞

    2022.11   一般社団法人軽金属学会   アルミニウム,マグネシウム基先進的高機能性構造材料の創製に関する研究

    徳永透子

  • 第32回 日本金属学会奨励賞

    2022.09   日本金属学会   各種金属材料の組織制御による強度・機能性向上に関する研究

    徳永透子

  • 優秀発表賞

    2022.03   新学術領域研究「ミルフィーユ構造の材料科学」   一方向性凝固Mg/LPSO二相合金におけるキンク強化

    徳永透子

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    Award type:Award from Japanese society, conference, symposium, etc. 

 

Teaching Experience

  • 物理学演習Ⅱ

    2022.10 Institution:Nagoya Institute of Technology

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    Level:Undergraduate (liberal arts) 

  • 材料機能工学演習Ⅱ

    2021.04 Institution:Nagoya Institute of Technology

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    Level:Undergraduate (specialized) 

  • 材料機能工学演習Ⅰ

    2021.04 Institution:Nagoya Institute of Technology

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    Level:Undergraduate (specialized) 

  • 物理学演習Ⅰ

    2021.04 Institution:Nagoya Institute of Technology

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    Level:Undergraduate (liberal arts) 

 

Committee Memberships

  • 日本金属学会   会報編集委員(第3分野世話人)  

    2019.04   

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    Committee type:Academic society

Social Activities

  • 私が食べられないミルフィーユの話をすることになったわけ

    Role(s): Lecturer

    精密工学会北陸信越支部  精密工学会北陸信越支部特別講演会+ワークショップ  2022.08