Details of the Researcher

PHOTO

Hiroshi Fukaya
Section
Graduate School of Engineering
Job title
Specially Appointed Assistant Professor(Research)
e-Rad No.
70985697

Education 3

  • Tohoku University　Graduate School of Engineering　Department of Metallurgy

    2020/04 - 2023/03

  • Tohoku University　Graduate School of Engineering　Department of Metallurgy

    2009/04 - 2011/03

  • Tohoku University　Faculty of Engineering　Department of Materials Science and Engineering

    2005/04 - 2009/03

Committee Memberships 6

  • 一般社団法人日本鉄鋼協会　論文誌編集委員会 専門委員

    2024/04 - Present

  • 一般社団法人日本鉄鋼協会　高温プロセス部会 精錬フォーラム 幹事

    2021/04 - Present

  • 一般社団法人日本鉄鋼協会　「溶融酸化物の熱伝導度計測高精度化」研究会 委員

    2023/03 - 2025/02

  • 一般社団法人日本鉄鋼協会　研究プロジェクト 「サステナブル高清浄クロム鋼溶製プロセス」 委員

    2021/04 - 2024/03

  • 一般社団法人日本鉄鋼協会　「凝固過程の介在物生成・成長・変性機構」研究会 委員

    2022/04 - 2024/02

  • 一般社団法人日本鉄鋼協会　「 スラグ・介在物制御による高清浄度クロム鋼溶製」研究会 委員

    2017/03 - 2020/02

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Professional Memberships 2

  • 日本銅学会

    2024/06 - Present

  • 日本鉄鋼協会

    2008 - Present

Research Interests 2

  • Thermodynamnics

  • Steelmaking

Research Areas 2

  • Nanotechnology/Materials / Metallic materials / Thermodynamics

  • Nanotechnology/Materials / Metals and resources production / Steelmaking

Awards 4

  1. Sawamura Award

    2026/03　Phonon mean free path of silicate glasses: a useful parameter to distinguish between framework and nonframework cations

  2. Sawamura Award

    2025/03　The Iron and Steel Institute of Japan

  3. 山岡賞

    2023/03　一般社団法人日本鉄鋼協会　「スラグ・介在物制御による高清浄度クロム鋼溶製」研究会

  4. Sawamura Award

    2023/03　The Iron and Steel Institute of Japan　Experimental Measurements and Numerical Analysis of Al Deoxidation Equilibrium of Molten Fe–Cr–Ni Alloy

Papers 14

  1. Formation Mechanism of Secondary Inclusions in Fe-36mass%Ni Alloy Using a Novel Combination Analysis Technique Peer-reviewed

    Hiroshi Fukaya, Jonah Gamutan, Makoto Kubo, Shintaro Yano, Shigeru Suzuki, Takahiro Miki

    ISIJ International　63　(6)　970-980　2023/06/15

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.isijint-2022-433 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  2. Experimental measurements and numerical analysis of al deoxidation equilibrium of molten Fe-Cr-Ni Alloy Peer-reviewed

    Hiroshi Fukaya, Seika Nakajima, Jonah Gamutan, Shigeru Suzuki, Koji Kajikawa, Ken Saito, Takahiro Miki

    ISIJ International　61　(9)　2331-2339　2021

    DOI： 10.2355/isijinternational.ISIJINT-2020-710 　

    ISSN： 0915-1559

  3. Experimental Measurements of Partition Coefficients in Fe-36mass%Ni Alloy

    Hiroshi Fukaya, Makoto Kubo, Shintaro Yano, Shigeru Suzuki, Kazushige Ioroi, Jonah Gamutan, Takahiro Miki

    ISIJ International　66　(7)　849-856　2026/06/15

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.isijint-2026-013 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  4. Copper Removal from Ferrous Scrap by Metal-Immersion Process Using a Molten Pb Bath: Application to Copper-Clad Steel

    Takuro Ushikubo, Christopher Miyazaki, Taiki Yoshinari, Hiroshi Fukaya, Takahiro Miki

    Tetsu-to-Hagane　2026

    DOI： 10.2355/tetsutohagane.TETSU-2026-028 　

  5. Reaction between molten 316 L stainless steel and Zircaloy-4 at 1450 °C during a core melt accident of LWR Peer-reviewed

    Tatsuya Kanno, Takayuki Iwama, Elizaveta Cheremisina, Hiroshi Fukaya, Lichun Zheng, Ryo Inoue, Shigeru Ueda

    JOURNAL OF NUCLEAR MATERIALS　618　156205　2026/01

    DOI： 10.1016/j.jnucmat.2025.156205 　

    ISSN： 0022-3115

    eISSN： 1873-4820

  6. Phonon Mean Free Path of Silicate Glasses: A Useful Parameter to Distinguish between Framework and Nonframework Cations Peer-reviewed

    Sohei Sukenaga, Bunta Ozato, Yohei Onodera, Shinji Kohara, Masahiro Shimizu, Tsuyoshi Nishi, Rie Endo, Takaaki Tomai, Akira Yoko, Sakiko Kawanishi, Hiroshi Fukaya, Hiromichi Ohta, Hiroyuki Shibata

    Tetsu-to-Hagane　111　(10)　551-560　2025/07/01

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/tetsutohagane.tetsu-2025-008 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  7. Effect of Flux Addition on the Reduction of EAF Slag Containing Cr2O3 and MnO

    Ryo Kitagawa, Hiroshi Fukaya, Takayuki Iwama, Elizaveta Cheremisina, Shigeru Suzuki, Ryo Inoue, Shigeru Ueda

    ISIJ International　65　(7)　1038-1042　2025/06/15

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.isijint-2024-393 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  8. Formation Mechanism of Secondary Inclusions in Fe-36mass%Ni Alloy Using a Novel Combination Analysis Technique Peer-reviewed

    Hiroshi Fukaya, Jonah Gamutan, Makoto Kubo, Shintaro Yano, Shigeru Suzuki, Takahiro Miki

    Tetsu-to-Hagane　111　(3)　151-162　2025/02/15

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/tetsutohagane.tetsu-2024-018 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  9. Phonon Mean Free Path of Silicate Glasses: A Useful Parameter to Distinguish between Framework and Nonframework Cations Peer-reviewed

    Sohei Sukenaga, Bunta Ozato, Yohei Onodera, Shinji Kohara, Masahiro Shimizu, Tsuyoshi Nishi, Rie Endo, Takaaki Tomai, Akira Yoko, Sakiko Kawanishi, Hiroshi Fukaya, Hiromichi Ohta, Hiroyuki Shibata

    ISIJ International　64　(15)　2245-2252　2024/12/30

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.isijint-2024-141 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  10. The Effect of Ca Pretreatment on the Characteristics of Rare‐Earth Nonmetallic Inclusions in Super‐Duplex Stainless Steel Peer-reviewed

    Lichun Zheng, Zebin Ren, Kai Chen, Yan Li, Hiroshi Fukaya, Zhouhua Jiang

    Steel research international　2024/03/02

    Publisher: Wiley

    DOI： 10.1002/srin.202300769 　

    ISSN： 1611-3683

    eISSN： 1869-344X

    More details Close

    Rare‐earth treatment enhances steel properties. Nevertheless, this beneficial effect can be counterbalanced by the formation of large‐sized rare‐earth inclusions. To refine and spheroidize these inclusions, Ca pretreatment is employed between Al deoxidation and Ce treatment stages for super‐duplex stainless steel 2507 at 1580 °C, using a vertical tube furnace. A systematic analysis is performed to compare the characteristics of nonmetallic inclusions between the Ca‐untreated and Ca‐treated tests. Prior to Ce addition, Ca pretreatment transforms irregular and clustered MgO–Al2O3 spinel inclusions into spherical CaO–MgO–Al2O3 inclusions. Additionally, Ca pretreatment significantly reduces mean diameter of the inclusions from 2.36 ± 0.54 to 1.27 ± 0.47 μm. After Ce addition, rare‐earth inclusions appear near‐spherical with few clustered inclusions in Ca pretreatment case. Conversely, the absence of Ca treatment results in numerous clustered inclusions, thereby yielding significantly larger rare‐earth inclusions, measuring 2.75 ± 1.66 μm compared to 1.99 ± 1.09 μm. CaO component in CaO–MgO–Al2O3 inclusions is largely reduced by Ce. Consequently, Ca pretreatment only yields slight alterations in chemical composition of rare‐earth inclusions. Ce in situ reduces parent inclusions, initiating from the periphery and progressing toward the center. Therefore, the size and morphology of final rare‐earth inclusions are largely inherited from parent inclusions.

  11. Experimental Measurements and Numerical Analysis of Al Deoxidation Equilibrium of Molten Fe–Cr–Ni Alloy Peer-reviewed

    Hiroshi Fukaya, Seika Nakajima, Jonah Gamutan, Shigeru Suzuki, Koji Kajikawa, Ken Saito, Takahiro Miki

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　108　(8)　469-478　2022/08

    Publisher: The Iron and Steel Institute of Japan

    DOI： 10.2355/tetsutohagane.TETSU-2021-111 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  12. Aluminum Deoxidation Equilibrium of Fe-Ni Alloy at 1773 K and 1873 K Peer-reviewed

    Hiroshi Fukaya, Koji Kajikawa, Annelies Malfliet, Bart Blanpain, Muxing Guo

    Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　49　(5)　2389-2399　2018/10/01

    DOI： 10.1007/s11663-018-1336-2 　

    ISSN： 1073-5615

  13. Magnesium deoxidation equilibrium of molten Fe-Cr-Ni alloy expressed by quadratic formalism and redlich-kister type polynomial Peer-reviewed

    Ryo Yamamoto, Hiroshi Fukaya, Naoya Satoh, Takahiro Miki, Mitsutaka Hino

    ISIJ International　51　(6)　895-900　2011/06/15

    DOI： 10.2355/isijinternational.51.895 　

    ISSN： 0915-1559

  14. Phase equilibrium between CaO·Al <inf>2</inf>O <inf>3</inf> saturated molten CaO-Al <inf>2</inf>O <inf>3</inf>-MnO and (Ca, Mn)S solid solution Peer-reviewed

    Hiroshi Fukaya, Takahiro Miki

    ISIJ International　51　(12)　2007-2011　2011

    DOI： 10.2355/isijinternational.51.2007 　

    ISSN： 0915-1559

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Misc. 6

  1. Compositional dependence of phonon mean free path in silicate glasses and melts

    助永壮平, 小里文太, 二階堂将太郎, 横哲, 笘居高明, 深谷宏, 柴田浩幸, 小野寺陽平, 小原真司, 清水雅弘, 川西咲子, 遠藤理恵, 西剛史, 太田弘道

    材料とプロセス(CD-ROM)　38　(1)　2025

    ISSN： 1882-8922

  2. Deoxidation Reaction in Molten Steel - Intended for Use at Actual Operations - Invited

    Hiroshi Fukaya

    Bulletin of The Iron and Steel Institute of Japan　28　(8)　58-61　2023/08

  3. Fe-Cr-Ni合金のAl脱酸平衡—Aluminum Deoxidation Equilibrium of Fe-Cr-Ni Alloy

    深谷 宏, 中嶋 成佳, Jonah Gamutan, 鈴木 茂, 梶川 耕司, 斉藤 研, 三木 貴博

    日本製鋼所技報　(72)　31-39　2021

    Publisher: 日本製鋼所

    ISSN： 0369-562X

  4. Fe-Ni合金のAl脱酸平衡—Aluminum Deoxidation Equilibrium of Fe-Ni alloy

    深谷 宏, 鈴木 茂, 梶川 耕司, Bart Blanpain, Muxing Guo, Annelies Malfliet

    日本製鋼所技報　(69)　9-15　2018

    Publisher: 日本製鋼所

    ISSN： 0369-562X

  5. 電気炉における鍛錬スケール使用による有価金属回収—Valuable Metal Recovery Method by the Addition of Forging Oxide Scale to the Electric Arc Furnace

    関 佑太, 生方 貴, 鈴木 忠, 上田 奏, 深谷 宏, 高橋 史生, 梶川 耕司

    日本製鋼所技報　(67)　46-51　2016

    Publisher: 日本製鋼所

    ISSN： 0369-562X

  6. 電気炉CaO添加量適正化によるスラグ低減—Reduction of the Usage of Electric Furnace Slag by the Optimization of the amount of CaO addition—素形材・エネルギー特集号

    深谷 宏, 草間 和久, 鈴木 忠

    日本製鋼所技報　(65)　23-29　2014

    Publisher: 日本製鋼所

    ISSN： 0369-562X

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Presentations 22

  1. An Experimental Investigation of the Thermodynamics of Molten Steel for Secondary Inclusion Control

    Hiroshi Fukaya

    The 16th Japan-Korea Workshop on Science and Technology in Ironmaking and Steelmaking　2026/01/09

  2. Determination of Al2O3 and (Mg, Mn)Al2O4 co-saturated liquidus line of Al2O3-MgO-MnO-SiO2

    Ryuya Habu, Motoya Iwabuchi, Hiroshi Fukaya, Shigeru Suzuki, Takahiro Miki

    ICS2025　2025/07/04

  3. Thermodynamics on the Equilibrium between Fe-Ni Alloy and Al2O3-MnO-SiO2 Slag

    Hiroshi Fukaya, Motoya Iwabuchi, Takahiro Miki, Shigeru Suzuki

    ICS2025　2025/07/04

  4. 低温還元による電気炉酸化スラグからの金属回収

    北河凌, 鈴木茂, 深谷宏, 岩間崇之, 井上亮, 植田滋

    日本鉄鋼協会第188回秋季講演大会　2024/09/20

  5. 溶融Fe-Ni合金のAl脱酸平衡における熱力学パラメータの導出

    岩渕元躍, 三木貴博, 鈴木茂 深谷宏

    日本鉄鋼協会第188回秋季講演大会　2024/09/19

  6. 16%Cr鋼中の硫化物系介在物に及ぼす脱酸元素の影響

    松澤海哉, 林康之, 深谷宏, 三木貴博

    日本鉄鋼協会第188回秋季講演大会　2024/09/19

  7. Equilibrium between molten Fe-Ni alloy and Al2O3-SiO2-MnO slag as 1733 K

    Motoya Iwabuchi, Hiroshi Fukaya, Takahiro Miki

    Asia steel 2024　2024/09/05

  8. Recovery of Cr and Mn from Electric Arc Furnace Slag

    Ryo KITAGAWA, Hiroshi Fukaya, Takahiro Iwama, Ryo INOUE, Shigeru UEDA

    Asia steel 2024　2024/09/05

  9. スラグの資源化の最前線 Invited

    深谷宏

    金属資源プロセス研究センターワークショップ　2024/08/09

  10. Effect of cooling rate on secondly inclusions of Fe-36mass%Ni alloy

    Hiroshi FUkaya, Takahiro Miki, Shintaro Yano, Makoto Kubo, Shigeru Suzuki

    2023/09/22

  11. New insight of inclusion formation from the novel inclusion analysis technique Invited

    Hiroshi Fukaya

    2023/09/14

  12. 溶融Fe-Cr-NiのAl脱酸平衡の実験的測定と数値解析 Invited

    深谷宏, 鈴木茂, 梶川耕司, 中嶋成佳, Gamutan Jonah, 斉藤研, 三木貴博

    日本鉄鋼協会、第185回春季講演大会　2023/03/10

  13. Fe-36mass%Ni合金における二次介在物生成の解析モデル

    深谷宏, 矢野慎太郎, 鈴木茂, 三木貴博

    日本鉄鋼協会、第185回春季講演大会　2023/03/08

  14. Fe-36mass%Ni合金にける二次介在物生成の熱力学的解析

    深谷宏, 矢野慎太郎, 鈴木茂, 三木貴博

    日本鉄鋼協会、第184回秋季講演大会　2022/09/21

  15. Measurement of the Al deoxidation equilibrium and its application in the operation for high cleanliness steels Invited

    2022/08/19

  16. Fe-36mass%Ni合金における二次介在物の実験的測定

    深谷宏, 鈴木茂, 矢野慎太郎, 三木貴博

    日本鉄鋼協会、第183回春季講演大会　2022/03/17

  17. Numerical Study of Al Deoxidation Equilibrium of Fe-Cr-Ni Alloy

    Hiroshi Fukaya

    2021/12/08

  18. Behavior of EAF slag reduction containing Cr2O3 and MnO

    2019/10/10

  19. Cr2O3およびMnOを含有する電気炉スラグの還元挙動

    深谷宏, 鈴木茂

    日本鉄鋼協会、第178回秋季講演大会　2019/09/13

  20. Cr2O3およびMnOを含有する電気炉スラグの1473Kにおける還元挙動

    深谷宏, 鈴木茂, 高橋一樹

    日本鉄鋼協会、第177回春季講演大会　2019/03/20

  21. 日本製鋼所における大型鋼塊製造プロセス Invited

    深谷宏

    講演会「電気炉製鉄システムの新展開」　2018/11/22

  22. 製鋼スラグ中のスピネル相からのCr溶出挙動

    深谷宏, 高橋一樹, 鈴木茂, 梶川耕司, 三木貴博

    日本鉄鋼協会 第175回春季講演大会　2018/03/20

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Research Projects 4

  1. 究極的な介在物分布制御による次世代金属組織制御技術の開発

    深谷 宏

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 若手研究

    Institution: 東北大学

    2025/04/01 - 2029/03/31

  2. 超多元系金属触媒によるターコイズ水素製造

    Offer Organization: 一般社団法人日本鉄鋼協会

    System: 鉄鋼カーボンニュートラル研究助成

    2026/04 - 2028/03

  3. Development of novel experimental techniques to obtain thermodynamic AI training data for the production of advanced metallic materials.

    Fukaya Hiroshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Research Activity Start-up

    Institution: Tohoku University

    2023/08/31 - 2025/03/31

    More details Close

    In order to explore the conditions to suspend molten iron on the liquid metal bath without contacting the refractory, experiments were conducted under 8 conditions. As refractory materials, dense and porous crucibles made of aluminum oxide and magnesium oxide were employed. Ag and Pb were employed as liquid metal bath, which have a misiblitiy gap in liquid Fe-X system (X=Ag, Pb). At 1873 K, Fe was added onto the liquid metal bath. During the experiments, floation befaviour of Fe on metallic bath were observed. After cooling, the contact between Fe and refractory materials were evaluated. Additonally, effects of Mg and Ca addition into liquid metal bath on the contact between Fe and refractories were also evaluated.

  4. 高度な製鋼プロセス設計のための新実験手法による脱酸平衡測定

    Offer Organization: 一般社団法人日本鉄鋼協会

    System: 鉄鋼研究振興助成

    2024/04 - 2025/03