新居浜高専　環境材料工学科
當代研究室
結晶物性工学領域

研究業績- Achievements -

原著論文

  1. M. Todai, T. Fukuda, T. Kakeshita: The influence of [110] compressive stress on kinetically arrested B2–R transformation in single-crystalline Ti–44Ni–6Fe and Ti–42Ni–8Fe shape-memory alloys, 17 (2024) Materials 51.
    URL: https://doi.org/10.3390/ma17010051
  2. K. Cho, M. Sakata, H.Y. Yasuda, M. Todai, M. Ueda, M. Takeyama, T. Nakano: Effect of scan speed on microstructure and tensie properties of Ti-48Al-2Cr-2Nb alloys fabricated via additive manufactureing, Mater. Trans., 64 (2023) 1112-1118.
    URL: https://doi.org/10.2320/matertrans.MT-ME2022012
  3. K. Cho, R. Kobayashi, H.Y. Yasuda, M. Todai, M. Ueda, M. Takeyama, T. Nakano: Influence of input energy density on morphology of unique layered microstructure of γ-TiAl alloys fabricated by electron beam powder bed fusion, Mater. Trans., 64 (2023) 44-49.
    URL: https://doi.org/10.2320/matertrans.MT-MLA2022015
  4. T. Takahashi, Y. Minamino, T. Manaka, M. Todai: Ternary diffusion and thermodynamic interaction in the β solid solutions of Ti-Al-Zr alloys at 1473 K, Mater. Trans., 63 (2022) 1597-1606.
    URL: https://doi.org/10.2320/matertrans.MT-L2022018
  5. 趙研, 小林良太, 安田弘行, 當代光陽, 上田実, 竹山雅夫, 中野貴由: 電子ビーム粉末床溶融結合法で作製したγ-TiAl合金の特異バンド状組織に及ぼす投入エネルギー密度の影響, 軽金属, 72 (2022) 298-303.
    URL: https://doi.org/10.2464/jilm.72.298
  6. M. Todai, K. Fukunaga, T. Nakano: Athermal ω Phase and Lattice Modulation in Binary Zr-Nb Alloys, Materials, 15 (2022) 2318.
    URL: https://doi.org/10.3390/ma15062318
  7. T. Nagase, M. Todai, P. Wang, T. Nakano: Design and development of (Ti, Zr, Hf)-Al based medium entropy alloys and hign entropy alloys, Materials Chemistry and Physics (2021) 125409.
    URL: https://doi.org/10.1016/j.matchemphys.2021.125409
  8. 高橋知司, 南埜, 真中俊明, 當代光陽: Ti-Al-Zr系β固溶体の1473Kにおける三元系拡散と原子間の熱力学的相互作用, 軽金属, 71 (2021) 539-548.
    URL: https://doi.org/10.2464/jilm.71.539
  9. T. Ishimoto, R. Ozasa, K. Nakano, M. Weinmann, C. Schnitter, M. Stenzel, A. Matsugaki, T. Nagase, M. Todai, H.S Kim, T. Nakano: Development of TiNbTaZeMo bio-high entropy alloy (BioHEA) super-solid solution selective laser melting, and iths improved mechanical property and biocompatibility, Scripta Materialia 194 (2021) 113658.
    URL: https://doi.org/10.1016/j.scriptamat.2020.113658
  10. M. Todai, T. Nagase, T. Nakano: Fabrication of be-ta Ti alloys without pre-alloyed powders via SLM, Materials Science Forum 1016 (2021) 1797-1801.
    URL: https://doi.org/10.4028/www.scientific.net/MSF.1016.1797
  11. T. Nagase, M. Todai, T. Nakano: Liquid phase separation in Co-Cr-Fe-Mn-Ni-Ag and Co-Cr-Fe-Mn-Ni-Cu High entropy alloys, Crystals 10 (2020) 527
    URL: https://doi.org/10.3390/cryst10060527
  12. T. Nagase, M. Todai, T. Nakano: Development of Ti-Zr-Hf-Y-La high-entropy alloys with dual hexagonal-close-packed structure, Scripta Materialia 186 (2020) 242-246.
    URL: https://doi.org/10.1016/j.scriptamat.2020.05.033
  13. 趙研, 安田弘行, 當代光陽, 上田実, 竹山雅夫, 中野貴由: 電子ビーム積層造形により作製したTiAl合金の熱間等方圧加圧法による高温疲労特性改善, スマートプロセス学会誌, Vol.9 [4] (2020) 180-184. (2021年 スマートプロセス学会 論文賞受賞)
    URL: https://doi.org/10.7791/jspmee.9.180
  14. T. Manaka, M. Todai, T. Hino: Behavior of hydrogen in a low carbon high strength steel, Transactions of the Materials Research Society of Japan 45[1] (2020) 5-7
    URL: https://doi.org/10.14723/tmrsj.45.5
  15. T. Nagase, M. Todai, T. Nakano: Development of Co-Cr-Mo-Fe-Mn-W and Co-Cr-Mo-Fe-Mn-W-Ag High-Entropy Alloys Based on Co-Cr-Mo alloys, Materials Transactions 61 (2020) 567-576.
    URL: https://doi.org/10.2320/matertrans.MT-MK2019002
  16. M. Todai, T. Fukuda, T. Kakeshita: Kinetic arrest of R-B19' transformation in iron-doped Ti-Ni shape memory alloy, Materials Transactions 61 (2020) 49-54.
    URL: https://doi.org/10.2320/matertrans.MT-MJ2019006
  17. T. Hori, T. Nagase, M. Todai, A. Matsugaki, T. Nakano: Development of Non-equiatomic Ti-Nb-Ta-Zr-Mo High-Entropy Alloys for Metallic Biomaterials, Scripta Materialia 172 (2019) 83-87.
    URL: https://doi.org/10.1016/j.scriptamat.2019.07.011
  18. T. Nagase, Takao Hori, M. Todai, Shi-hai Sun, Takayoshi Nakano: Additive manufacturing of dense components in beta‑titanium alloys with crystallographic texture from a mixture of pure metallic element powders, Materials and Design 173 (2019) [107771].
    URL: https://doi.org/10.1016/j.matdes.2019.107771
  19.  P. Wang, M. Todai, T. Nakano: Beta titanium single crystal with bone-like elastic modulus and large crystallographic elastic anisotropy, Journal of Alloys and Compounds 782 (2019) 667-671.
    URL: https://doi.org/10.1016/j.jallcom.2018.12.236
  20. 安田弘行, 趙研, 當代光陽, 上田実, 近藤大介, 唐土庄太郎, 池田亜矢子, 竹山雅夫, 中野貴由: Additive Manufacturing プロセスによるTiAl 金属間化合物の組織制御と力学特性, スマートプロセス学会誌 8 [3] (2019) 78-83.
    URL: https://doi.org/10.7791/jspmee.8.78
  21. 超研, 安田弘行, 當代光陽, 上田実, 竹山雅夫, 中野貴由: 電子ビーム積層造形法を用いて造形したTiAl合金の特異組織と力学特性, チタン67 [4] (2019) 50-56.
  22. M. Todai, T. Nagase, T. Hori, H. Motoki, S.H. Sun, K. Hagihara, T. Nakano: Fabrication of the beta-titanium alloy rods from a mixture of pure metallic element powders via selected laser melting, Materials Science Forum, 941 (2018) 1260-1263.
    URL: https://doi.org/10.4028/www.scientific.net/MSF.941.1260
  23. M. Sakata, J.Y Oh, Ken Cho, H. Y. Yasuda, M. Todai, T. Nakano, A. Ikeda, M. Ueda, M. Takeyama: Effects of heat treatment on unique layered microstructure and tensile properties of TiAl fabricated by electron beam melting, Materials Science Forum, 941 (2018) 1366-1371.
    URL: https://doi.org/10.4028/www.scientific.net/MSF.941.1366
  24. K. Cho, R. Kobayashi, T. Fukuoka, J.Y. Oh, H.Y. Yasuda, M. Todai, T. Nakano, A. Ikeda, M. Ueda, M. Takeyama: Microstructure and fatigue properties of TiAl with unique layered microstructure fabricated by electron beam melting, Materials Science Forum, 941 (2018) 1597-1602.
    URL: https://doi.org/10.4028/www.scientific.net/MSF.941.1597
  25. 真中俊明, 當代光陽, 和田瑞生: 高Zn濃度Al-Zn-Mg系合金の湿潤空気中での水素脆化特性, 軽金属 68 (2018) 615-620.
    URL: https://doi.org/10.2464/jilm.68.615
  26. P. Wang, M. Todai, T. Nakano: ω-phase transformation and lattice modulation in biomedical -phase Ti-Nb-Al alloys, J. Alloys and Comp. 766 (2018) 511-516.
    URL: https://doi.org/10.1016/j.jallcom.2018.06.266
  27. T. Nagase, M. Todai, T. Hori, T. Nakano: Microstructure of equiatomic and non-equiatomic Ti-Nb-Ta-Zr-Mo high-entropy alloys for metallic biomaterials, Journal of Alloys and Compounds, 753 (2018) 412-421.
    URL: https://doi.org/10.1016/j.jallcom.2018.04.082
  28. K. Cho, R. Kobayashi, J.Y. Oh, H.Y. Yasuda, M. Todai, T. Nakano, A. Ikeda, M. Ueda, M. Takeyama: Fatigue behavior of Ti-48Al-2Cr-2Nb alloys with unique layered microstructure fabricated by electron beam melting, Intermetallics 95 (2018) 1-10.
    URL: https://doi.org/10.1016/j.intermet.2018.01.009
  29. K. Hagihara, T. Nakano, M. Todai: Unusual dynamic precipitation softening in induced by dislocation glide in biomedical beta-titanium alloys, Scientific Reports 7 (2017) srep8056.
    URL: https://www.nature.com/articles/s41598-017-08211-7
  30. M. Todai, T. Nakano, T. Liu, H.Y. Yasuda, K. Hagihara, K. Cho, M. Ueda, M. Takeyama: Effect of building direction on the microstructure and mechanical properties of Ti-48Al-2Cr-2Nb alloy additively manufactured by electron beam melting, Additive Manufacturing 13 (2017) 61-70.
    URL: https://doi.org/10.1016/j.addma.2016.11.001 2020年1月Most cited lancking 15位,
  31. M. Todai, T. Nagase, T. Hori, A. Matsugaki, A. Sekita, T. Nakano: Novel TiNbTaZrMo high-entropy alloys for metallic biomaterials, Scripta Materialia 129 (2017) 65-68.
    URL: https://doi.org/10.1016/j.scriptamat.2016.10.028 2020年1月Most cited lancking 11位
  32. M. Todai, K. Fukunaga, T. Nakano: Athermal ω-phase transformation and mechanical properties in binary Zr-Nb biomedical alloy, Materilas Science Forum 879 (2016) 1969-1973.
  33. M. Todai, K. Hagihara, K. Kishida, H. Inui, T. Nakano: Microstructure and fracture toughness in boron added NbSi2(C40)/MoSi2(C11b) duplex crystals, Scripta Materialia 113 (2016) 236-240.
    URL: https://doi.org/10.1016/j.scriptamat.2015.11.004
  34. 當代光陽, 萩原幸司, 石本卓也, 山本憲吾, 中野貴由: β型Ti-15Mo-5Zr-3Al合金単結晶を用いた低ヤング率ボーンプレートの開発, 鉄と鋼 101 (2015) 501-505.
    URL: https://doi.org/10.2355/tetsutohagane.TETSU-2015-044
  35. M. Todai, T. Fukuda and T. Kakeshita: Temperature dependence of diffuse satellites in Ti–(50 − x)Pd–xFe (14 ⩽ x ⩽ 20 (at.%)) alloys, Journal of Alloys and Compounds 615 (2014) 1047-1051.
    URL: https://doi.org/10.1016/j.jallcom.2014.07.152
  36. M. Todai, P. Wang, K. Fukunaga, T. Nakano: Effect of phase stability on some physical and mechanical properties in β-Ti single crystal for biomedical applications, Materilas Science Forum 783-786 (2014) 1372-1376.
    URL: https://doi.org/10.4028/www.scientific.net/MSF.783-786.1372
  37. T. Nakano, A. Matsugaki, T. Ishimoto, M. Todai, A. Serizawa, R. Suetoshi, Y. Noyama and W. Fujitani: Control of Oriented Extracellular Matrix Similar to Anisotropic Bone Microstructure, Materials Science Forum 783-786 (2014) 72-77.
    URL: https://doi.org/10.4028/www.scientific.net/MSF.783-786.72
  38. M. Todai, T. Fukuda and T. Kakeshita: Direction of atom displacement in incommensurate state of Ti-32Pd-18Fe shape memory alloy, Materials Letters 108 (2013) 293-296.
    URL: https://doi.org/10.1016/j.matlet.2013.07.018
  39. Pan Wang, 當代光陽, 中野貴由: 生体用Ti-Nb二元系合金単結晶におけるβ相の不安定性とその基礎物性, 日本金属学会誌 77 (2013) 281-286.
    URL: https://doi.org/10.2320/jinstmet.J2013020
  40. T. Fukuda, M. Todai, T. Kakeshita: Isothermal martensitic transformation to the R-phase in a Ti-44Ni-6Fe at.% alloy, Scripta Materialia 69 (2013) 239-241.
    URL: https://doi.org/10.1016/j.scriptamat.2013.04.005
  41. M. Todai, T. Fukuda and T. Kakeshita: Relation between negative temperature coefficient in electrical resistivity and athermal β phase, Journal of Alloys Compounds 577S (2013) S431-S434.
    URL: https://doi.org/10.1016/j.jallcom.2012.02.026
  42. P. Wang, M. Todai and T. Nakano: β-Phase Instability in Binary Ti-xNb Biomaterial Single Crystals, Materials Transactions 54 (2012) 156-160.
    URL: https://www.jim.or.jp/journal/e/54/02/156.html
  43. S-H Lee, M. Todai, M. Tane, K. Hagihara, H. Nakajima, T. Nakano: Biocompatible Low Young's Modulus Achieved by Strong Crystallographic Elastic Anisotropy in Ti-15Mo-5Zr-3Al Alloy Single Crystal, Journal of the Mechanical Behavior of Biomedical Materials 14 (2012) 48-54.
    URL: https://doi.org/10.1016/j.scriptamat.2010.12.030
  44. Y-H. Lee, M. Todai, T. Okuyama, T. Fukuda, T. Kakeshita and R. Kainuma: Isothermal nature of martensitic transformation in a Ni45Co5Mn36.5In13.5 magnetic shape memory alloy Scripta Materialia 64 (2011) 927-930.
    URL: 10.1016/j.scriptamat.2010.12.030
  45. M. Todai, T. Fukuda and T. Kakeshita: Position of incommensurate diffuse satellites appearing in Ti-Ni based shape memory alloys, Solid-Solid Phenomena 172-174 (2011) 150-154.
    URL: https://doi.org/10.4028/www.scientific.net/SSP.172-174.150
  46. M. Todai, T. Fukuda and T. Kakeshita: Relation between incommensurate satellites and phonon softening in Ti-Ni-based shape memory alloys. Scripta Materialia 64 (2011) 541-543.
    URL: https://doi.org/10.1016/j.scriptamat.2010.11.039
  47. M. Todai, A. Higaki, T. Fukuda and T. Kakeshita: Martensitic transformation from incommensurate state with nano-scale domain structure in a Ti-42Ni-8Fe (at.%) alloy under compressive stress, Philosophical Magazine Letters 91 (2011) 29-34.
    URL: https://doi.org/10.1080/09500839.2010.522211
  48. M. Todai, T. Fukuda and T. Kakeshita: Premartensitic state of Ti-Pd-Fe shape memory alloys studied by electrical resistivity, magnetic susceptibility and specific heat measurements, Materials Transactions 51 (2010) 906-910.
    URL: https://doi.org/10.2320/matertrans.M2009412
  49. T. Fukuda, H. Kushida, M. Todai, T. Kakeshita and H. Mori: Crystal structure of the martensite phase in the ferromagnetic shape memory compound Ni2MnGa studied by electron diffraction, Scripta Materialia 61 (2009) 473-476.
  50. M. Todai, T. Fukuda and T. Kakeshita: Anomalies in Physical Properties and Diffuse Scatterings for Iron-Doped Ti-Pd Shape memory alloys, Journal of Physics: Conference Series (JPCS) 165 (2009) 012056.
    URL: https://iopscience.iop.org/article/10.1088/1742-6596/165/1/012056

査読付国際学会会議録

  1. S. Kato, A. Oshita1, T. Kubo, M. Todai: Classification of Steel Microstructure Image Using CNN, Proceedings of the 18th International Conference on P2P, Parallel, Grid, Cloud and Internet Computing (3PGCIC-2023) (2024) pp.59–68.
    URL: https://doi.org/10.1007/978-3-031-46970-1_6
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  2. T. Manaka, M. Todai: Effect of heat treatment on hydrogen embrittlement of an Al-10Zn-2.6Mg-1.6Cu-0.2Cr alloy, Proceedings of PRICM10.
  3. M. Todai, P Wang, K. Hagihara and T. Nakano: Anomalous Fatigue Behavior in Ti-Nb Single Crystal, Proceedings of ECO MATES 2011 53-54.
  4. M. Todai, Sho Majima, T. Fukuda and T. Kakeshita: Position of diffuse satellites appearing in Ti-44Ni-6Fe shape memory alloy, Proceedings of ESOMAT 2009 - 8th European Symposium on Martensitic Transformations 2009
    URL: http://dx.doi.org/10/esomat/200902033
  5. M. Todai, T. Fukuda and T. Kakeshita: Temperature dependence of electrical resistivity and diffuse scattering in Ti-(50-x)Pd-xFe (14 ≤ x ≤ 22) alloys, Proceedings of the International Conference on Martensitic Transformation (June 29-July 05 2008) 669-672.
  6. M. Todai, K. Wada, M-S. Choi, T. Fukuda and T. Kakeshita: Insatability of B2-type structure in iron doped Ti-Pd shape memory alloys, Proceedings of the International Conference of Shape Memory and Superelastic Technologies (December 3-5, 2007) 667-672.
  7. Y. Komizo, H. Terasaki, M. Ikeda, F. Nishino and M. Todai: Fine-Grained Titanium by Inclusion-Assisted Microstructure control, Proceedings of the 11th World Conference on Titanium (JIMIC5) (June 3-7 2007) 741-744.

解説論文

  1. 安田弘行, 趙研, 當代光陽, 中島広豊, 竹山雅夫, 中野貴由: 航空機ジェットエンジン用TiAl合金の電子ビーム積層造形, ふぇらむ 27 [12] (2022) 913-919.
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  2. 當代光陽, 永瀬丈嗣,　中野貴由: 純チタンに匹敵する生体適合性を有する生体用bcc型ハイエントロピー合金の設計と開発, チタン68 [1] (2020) 59-63.
  3. 當代光陽, 永瀬丈嗣,　中野貴由: 軽金属元素を含むハイエントロピー合金とBCC型生体用ハイエントロピー合金の開発と展望, 軽金属 70 [1] (2020) 14-23.
    URL: https://doi.org/10.2464/jilm.70.14
  4. 永瀬丈嗣, 當代光陽, 中野貴由: 純元素粉末を用いたチタン合金の金属積層造形, J. JFS 91 [9] (2019) 627-633.
  5. 永瀬丈嗣, 水内潔, 當代光陽, 中野貴由: 耐熱合金・生体合金として開発がすすむ4族・5族・6族元素からなるハイエントロピー合金の凝固組織, まてりあ 58 (2019) 78.
    URL: https://doi.org/10.2320/materia.58.78
  6. 真中俊明, 當代光陽: 企業 ( 研究所 ) 紹介 新居浜工業高等専門学校, 軽金属 68 [7] (2018) 394.
  7. 當代光陽: 新居浜高専における軽金属に関する研究, 軽金属 68 [4] (2018) 237.
  8. 當代光陽, 石本卓也, 松垣あいら, 中野貴由: 次世代生体材料開発に向けた設計指針の構築, まてりあ 10 (2017) 584-588.
  9. 中野貴由, 永瀬丈嗣, 當代光陽: 生体用高強度ハイエントロピー合金の開発, BIO INDUSTRY 34 (2017) 8-20.
  10. 當代光陽: 積層造形法を用いた金属系バイオマテリアル開発の新展開, バイオマテリアル, Vol.34, No.4 (2016) 288-291.
  11. 當代光陽: Ti-15Mo-5Zr-3Al合金を用いた単結晶ボーンプレートの開発, チタン 63 [4] (2015) 32.
  12. 當代光陽: 相転移と転位が織成す現象, まてりあ 52 (2013) 36.

著書

  1. 當代光陽 (分担執筆者) :デジタル時代のAdditive Manufacturing の基礎と応用[第2版],中野貴由, 桐原聡秀, 近藤勝義, 西川宏, 田中学編, 一般社団法人スマートプロセス学会 (2023)
  2. 當代光陽(分担執筆): デジタル化時代のAdditiveＡ Manufacturingの基礎と応用, 編集：中野貴由, 桐原聡秀, 近藤勝義, 西川宏, 田中学, 一般社団法人スマートプロセス学会　2022年発行
  3. 當代光陽 (分担執筆者) : 機能性材料科学入門, 石井知彦・楠瀬尚史・鶴町 徳昭・舟橋正浩・松本洋明・宮川勇人編, 共立出版社 (2022)
  4. 當代光陽 (分担執筆者) 中野貴由: 日本機械学会基準,　医療用コーティング膜の界面強度評価試験法 (2019).
  5. 當代光陽 (分担執筆者) 中野貴由: 薬事認可されたβ型Ti-15Mo-5Zr-3Al単結晶の低弾性化と異方化機構の解明 —単結晶化を利用した次世代骨プレートの提案と設計理論—, バイオマテリアル研究の最前線, 日本金属学会編, (2014).
  6. 當代光陽 (分担執筆者): 未来型人工関節を目指して, 吉川秀樹・中野貴由・松岡厚子・中島義雄編, 日本医学館, (2013).

特許

  1. 當代光陽, 永瀬丈嗣, 松垣あいら, 中野貴由: 他成分系からなる合金, 特願2016-212070.
  2. 安田 弘行, 當代光陽, 中野貴由, 上田実: チタン-アルミニウム合金,特許6792837号, 2020年11月11日登録, 2017年1月27日出願, 特願2016-027827.

新聞報道

  1. 日刊工業新聞　HCP構造チタン合金, 2020年 (令和2年) 6月11日.
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  2. 日刊工業新聞　阪大、チタンより固い生体合金開発−強度1.7倍、人工関節用に. 2016年 (平成28年) 11月30日.
    PDF
  3. 日刊工業新聞　超高温耐久複合材、割れにくさ大幅改善, 2015年 (平成27年) 11月24日.
    PDF
  4. 日刊工業新聞　実際の骨により近く, 2012年 (平成24年) 5月16日.