研究成果 Research Achievements

論文

Introducing a novel fabrication route for metastable β-type Ti-Cr-Sn alloys with ultra-high Sn content using pure elemental mixed powders via laser powder bed fusion, Additive Manufacturing

Naoki Nohira*, Cheng Chen, Yilin Jin, Wan-Ting Chiu, Akira Umise, Takeshi Teramoto, Masaki Tahara*, Ryosuke Ozasa, Takuya Ishimoto, Yuichiro Koizumi, Takayoshi Nakano, Hideki Hosoda:
Introducing a novel fabrication route for metastable β-type Ti-Cr-Sn alloys with ultra-high Sn content using pure elemental mixed powders via laser powder bed fusion,
Additive Manufacturing, (2026), in press.

著書・解説

骨基質配向性を考慮した積層造形による椎体間スペーサーの開発と臨床応用

中野貴由：
骨基質配向性を考慮した積層造形による椎体間スペーサーの開発と臨床応用
日本骨形態計測学会雑誌, 35 [2] , (2025), pp. 38-40
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論文

Formation of a bi-directional α₂/γ lamellar microstructure through crystallographic texture control in a γ-TiAl alloy fabricated by laser powder bed fusion, Journal of Materials Research and Technology

Sung-Hyun Park, Ozkan Gokcekaya, Kazuhisa Sato, Ji-Sung Park, Chae-Won Kim, Myung-Hoon Oh, Seong-Woong Kim*, Takayoshi Nakano*:
Formation of a bi-directional α₂/γ lamellar microstructure through crystallographic texture control in a γ-TiAl alloy fabricated by laser powder bed fusion,
Journal of Materials Research and Technology, 42 (2026) 2625-2637.

DOI: https://doi.org/10.1016/j.jmrt.2026.03.273

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論文

PdAg Nanoparticles Supported on Na₂Ti₃O₇ for CO₂ Hydrogenation into Formic Acid: Expanding Catalyst Design from Powder to Metal 3D-printed Self-Catalytic Reactor, ACS Applied Energy Materials

Naoyuki Hayashida, Hyo-Jin Kim, Kazuki Shun, Hideto Yoshida, Takayoshi Nakano, Kohsuke Mori*:
PdAg Nanoparticles Supported on Na₂Ti₃O₇ for CO₂ Hydrogenation into Formic Acid: Expanding Catalyst Design from Powder to a Metal 3D-Printed Self-Catalytic Reactor,
ACS Applied Energy Materials, (2026)

DOI: https://doi.org/10.1021/acsaem.6c00086

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論文

Integrated Computational and Experimental Study on Rapid Heating and Cooling Conditions in Powder-Bed Fusion of Al-Si Hypoeutectic Alloys

Masayuki Okugawa, Yuya Furushiro, Seori Motoyama, Yuheng Liu, Takayoshi Nakano, Yuichiro Koizumi :
Integrated Computational and Experimental Study on Rapid Heating and Cooling Conditions in Powder-Bed Fusion of Al-Si Hypoeutectic Alloys, Vol. 67, No. 4 (2026) pp. 535 to 542

DOI: http://doi.org/10.2320/matertrans.MT-M2025132

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論文

Data-Selective Machine Learning Framework (DSML) for Defect-Aware, Interpretable Yield-Strength Prediction for LPBF Fabricated AlSi10Mg Alloys

Jeong Ah Lee, Yeon Woo Kim, Takayoshi Nakano, Hyomoon Joo, Jeong Min Park*, Hyoung Seop Kim*:
Data-Selective Machine Learning Framework (DSML) for Defect-Aware, Interpretable Yield-Strength Prediction for LPBF Fabricated AlSi10Mg Alloys, Acta Materialia, 309 (2026) 122101.

DOI: https://doi.org/10.1016/j.actamat.2026.122101

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受賞

令和７年度大阪大学工学研究科長特別表彰

松崎典弥、中出浩二、高須賀晶子、野嶽一将、杉浦拓也、北野史朗、児玉賢洋、加藤あすか、水上美樹
大阪ヘルスケアパビリオンにおける「家庭で作る霜降り肉」と題した培養肉に関する常設展示
2026年3月9日

論文

Single-track investigation of rapid solidification conditions of Hastelloy-X Ni-based superalloy in laser powder-bed fusion and applicability of columnar equiaxed transition criteria

Masayuki Okugawa, Haruki Yoshima, Yuheng Liu, Pan Wang, Yuichiro Koizumi, Takayoshi Nakano:
Single-track investigation of rapid solidification conditions of Hastelloy-X Ni-based superalloy in laser powder-bed fusion and applicability of columnar equiaxed transition criteria, Virtual and Physical Prototyping, 21 (2026) e2639906.

DOI: https://doi.org/10.1080/17452759.2026.2639906

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論文

Microstructural evolution and wear resistance enhancement of electron-beam-fabricated nickel titanium coatings on titanium by heat treatment

Lei Wang, Masayuki Okugawa*, Yuheng Liu, Ken Cho, Yuichiro Koizumi*, Hiroyuki Y. Yasuda and Takayoshi Nakano:
Microstructural Evolution and Wear Resistance Enhancement of Electron-Beam-Fabricated Nickel Titanium Coatings on Titanium by Heat Treatment,
Materials Transactions, 67 (2026) 771-782.

DOI: https://doi.org/10.2320/matertrans.MT-M2025170

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論文

In situ Alloyed Refractory High Entropy Alloy by Laser Powder Bed Fusion

Yong Seong Kim, Ozkan Gokcekaya, Ryosuke Ozasa, Takayoshi Nakano:
In situ Alloyed Refractory High Entropy Alloy by Laser Powder Bed Fusion, Materials Science Forum, 1175 (2026) 105-110.

DOI: 10.4028/p-0OnKo3

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論文

Influence of Hierarchical Structure on Mechanical Properties of Additive Manufactured IN718 Alloys

Kippei Yamashita, Ken Cho, Takuma Saito, Taisuke Sasaki, Katsuhiko Sawaizumi, Masayuki Okugawa, Yuichiro Koizumi, Takayoshi Nakano, Hiroyuki Y. Yasuda:
Influence of Hierarchical Structure on Mechanical Properties of Additive Manufactured IN718 Alloys, Materials Science Forum, 1175 (2026) 129-134.

DOI: 10.4028/p-1DlHhB

著書・解説

自動車産業に向けた金属AMにおける形状・金属組織を活用した力学機能設計

中野貴由、石本卓也：自動車産業に向けた金属AMにおける形状・金属組織を活用した力学機能設計、 自動車技術（Journal of Society of Automotive Engineers of Japan）、Vol.80, (2026), 106-112.

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著書・解説

過酸化水素生成反応を駆動する金属有機構造体光触媒の設計, 触媒

近藤吉史、関野徹、山下弘巳:過酸化水素生成反応を駆動する金属有機構造体光触媒の設計, 触媒, 68[1] (2026) 2-8.

論文

Manuscript number Integrated computational and experimental study on rapid heating and cooling in powder-bed fusion of Al-Si hypoeutectic alloys

Masayuki Okugawa*, Yuya Furushiro, Seori Motoyama, Yuheng Liu, Takayoshi Nakano, Yuichiro Koizumi: Manuscript number Integrated computational and experimental study on rapid heating and cooling in powder-bed fusion of Al-Si hypoeutectic alloys, Materials Transactions, (2026), in press.

論文

Identification of lattice defects in laser powder bed fusion-fabricated 316L stainless steel by positron annihilation spectroscopy

Masataka Mizuno*, Masaki Otsuka, Kazuhisa Sato, Takuya Ishimoto, Takayoshi Nakano, Hideki Araki: Identification of lattice defects in laser powder bed fusion-fabricated 316L stainless steel by positron annihilation spectroscopy, Journal of Materials Research and Technology, in press, 40, (2026), 188-193.

DOI: https://doi.org/10.1016/j.jmrt.2025.12.147

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論文

Investigation of lattice defects in β-type Ti-Cr alloys fabricated via laser powder bed fusion using positron annihilation spectroscopy and first-principles calculations

Masataka Mizuno, Ryosuke Takahagi, Ryosuke Ozasa, Takayoshi Nakano, Hideki Araki:
Investigation of lattice defects in β-type Ti-Cr alloys fabricated via laser powder bed fusion using positron annihilation spectroscopy and first-principles calculations, Journal of Physics: Conference Series, 3149, (2025), 012010.

DOI: https://iopscience.iop.org/article/10.1088/1742-6596/3149/1/012010

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新聞・報道

2025年11月12日　日刊工業新聞

金属３D積層で高強度、ニッケル基超合金阪大が力学機能制御法
日刊工業新聞　2025年11月12日　科学技術・大学面

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論文

Effect of nanoscale cellular structure on the mechanical properties of Inconel 718 with unique hierarchical structure fabricated by laser powder bed fusion

Ken Cho, Kippei Yamashita, Shinnosuke Kakutani, Takuma Saito, Taisuke Sasaki, Katsuhiko Sawaizumi, Masayuki Okugawa, Yuichiro Koizumi, Tsuyoshi Mayama, Taichi Kikukawa, Ozkan Gokcekaya, Takuya Ishimoto, Hajime Kimizuka, Wu Gong, Takuro Kawasaki, Stefanus Harjo, Takayoshi Nakano, Hiroyuki Y. Yasuda*: Effect of nanoscale cellular structure on the mechanical properties of Inconel 718 with unique hierarchical structure fabricated by laser powder bed fusion, Acta Materialia.

DOI: https://doi.org/10.1016/j.actamat.2025.121696

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新聞・報道

2025年11月11日　日刊工業新聞朝刊

金属積層造形後押し、経産省産業振興策など検討会
日刊工業新聞　2025年11月11日朝刊　総合2面

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受賞

一般社団法人軽金属学会第43回軽金属奨励賞

奥川将行
アルミニウム合金付加製造での高速昇温溶融に注目した材料組織制御に関する研究
2025年11月7日

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