研究成果
2025年05月現在
●論文成果抜粋
NEXTAで行われている研究について主要な成果論文の抜粋を示します。NEXTAでは金属材料に関する基礎・応用研究を、共同研究としてオックスフォード大学をはじめとする外部機関と積極的に行っています。
2025年
Dai, G.; Min, J.; Sun, Z.; Guo, Y.; Bhowmik, A.; Shinjo, J.; Lu, J.; Panwisawas, C.; “Tailoring microstructure in functionally graded NiTi alloys using in-situ alloying directed energy deposition,” Journal of Materials Processing Technology, 341 (2025) 118884.
https://doi.org/10.1016/j.jmatprotec.2025.118884
Wu, Y.; Tang, Y.T.; Barras, J.; Shinjo, J.; “Understanding Extreme High-speed Laser Material Deposition: Characterisation, Modelling and Bonding Mechanisms,” Surface & Coatings Technology, 511 (2025) 132218.
https://doi.org/10.1016/j.surfcoat.2025.132218
Wannapraphai, P.; Panwisawas, C.; Houghton, O.S.; Shinjo, J.; Wakabayashi, H.; Phetrattanarangsi, T.; Kuimalee, S.; Reed, R.C.; Greer, A.L.; Lohwongwatana, B.; Puncreobutr, C.; “Quantifying chemical homogeneity across the melt pool in laser powder-bed fusion of metallic glass matrix composites from blended elemental powders,” Journal of Materials Research and Technology, 35 (2025) 6397-6407.
https://doi.org/10.1016/j.jmrt.2025.02.204
Leung, C.L.A.; Gardy, J.; Isaacs, M.; Marathe, S.; Kłosowski, M.M.; Shinjo, J.; Panwisawas, C.; Lee, P.D.; “Unravel melt pool and bubble dynamics during laser powder bed fusion of polyamides using synchrotron X-ray imaging and process simulation,” Virtual and Physical Prototyping, 20 (2025) e2465905.
https://doi.org/10.1080/17452759.2025.2465905
Zhong, A.; Lapointe, C.; Goryaeva, A.M.; Arakawa, K.; Athènes, M.;Marinica, M.C.; "Unraveling temperature-induced vacancy clustering in tungsten: from direct microscopy to atomistic insights via data-driven Bayesian sampling," PRX Energy, 4 (2025) 013008.
http://doi.org/10.1103/PRXEnergy.4.013008
2024年
Kunioka, H.; Shiojiri, D.; Takahashi, S.; Hiratsuka, K.; Yamaguchi, M.; Hirayama, N.; Imai, Y.; Imai, M.; Iida, T.; “Investigation of group 13 elements as potential candidates for p-type dopants in the narrow-gap thermoelectric semiconductor α-SrSi2”, Journal of Materials Science, 59 (2024) 7840-7853.
https://doi.org/10.1007/s10853-024-09653-x
Manabe, N; Suzuki, AS; Ninagawa, M; Wakabayashi, H; Hirayama, N; Niinobe, K; Tang, YT; Utada, S; McCartney, DG; Reed, RC; Kitagawa, H: “Ultralow-Temperature Sintering of Titanium Powder by Spark Plasma Sintering under Cyclic Pressure,” Advanced Engineering Materials, 26 (2024) 2400965.
https://doi.org/10.1002/adem.202400965
Mukherjee, T; Shinjo, J; DebRoy, T; Panwisawas, C; “Integrated modeling to control vaporization-induced composition change during additive manufacturing of nickel-based superalloys,” npj Computational Materials, 10 (2024) 230.
https://doi.org/10.1038/s41524-024-01418-z
Aliyu, AAA; Puncreobutr, C; Kuimalee, S; Phetrattanarangsi, T; Boonchuduang, T; Taweekitikul, P; Panwisawas, C; Shinjo, J; Lohwongwatana, B; “Laser-inherent porosity defects in additively manufactured Ti-6Al-4V implant: Formation, distribution, and effect on fatigue performance,” Journal of Materials Research and Technology, 30 (2024) 5121-5132.
https://doi.org/10.1016/j.jmrt.2024.04.225
Zhang, K; Chen, Y; Marussi, S; Fan, X; Fitzpatrick, M; Bhagavath, S; Majkut, M; Lukic, B; Jakata, K; Rack, A; Jones, MA; Shinjo, J; Panwisawas, C; Leung, CLA; Lee, PD; “Pore evolution mechanisms during directed energy deposition additive manufacturing,” Nature Communications, 15 (2024) 1715.
https://doi.org/10.1038/s41467-024-45913-9
Shinjo, J; Kutsukake, A; Wakabayashi, H; Arakawa, K; Ogawara, A; Uchida, H; Panwisawas, C; Reed, RC; “In-process monitoring and direct simulation of Argon shielding gas and vapour dynamics to control laser-matter interaction in laser powder bed fusion additive manufacturing,” Additive Manufacturing, 80 (2024) 103953.
https://doi.org/10.1016/j.addma.2023.103953
2023年
Shibata, A; Miyamoto, G; Morito, S; Nakamura, A; Moronaga, T; Kitano, H; Gutierrez-Urrutia, I; Hara, T; Tsuzaki, K; “Substructure and crystallography of lath martensite in as-quenched interstitial-free steel and low-carbon steel,” Acta Materialia, 246 (2023) 118675.
https://doi.org/10.1016/j.actamat.2023.118675
Dai, G; Sun, Z; Li, Y; Jain, J; Bhowmik, A; Shinjo, J; Lu, J; Panwisawas, C; “Grain refinement and columnar to equiaxed transition of Ti6Al4V during additive manufacturing via different laser oscillations,” International Journal of Machine Tools and Manufacture, 189 (2023) 104031.
https://doi.org/10.1016/j.ijmachtools.2023.104031
Shinjo, J; Kutsukake, A; Arote A; Tang, YT; McCartney, DG; Reed, RC; Panwisawas, C, “Physics-based thermal-chemical-fluid-microstructure modelling of in-situ alloying using additive manufacturing: Composition-microstructure control,” Additive Manufacturing, 64 (2023) 103428
https://doi.org/10.1016/j.addma.2023.103428
2022年
Tang, YT; Pham, AH; Morito, S; McCartney, DG; Reed, RC, “On the solid-state dendritic growth of M7C3 carbide at interfaces in an austenitic system,” Scripta Materialia, 213 (2022) 114585
https://doi.org/10.1016/j.scriptamat.2022.114585
Shiojiri, D; Iida, T; Kakio, H; Yamaguchi, M; Hirayama, N; Imai, Y, “Enhancement of thermoelectric performance of Mg2Si via co-doping Sb and C by simultaneous tuning of electronic and thermal transport properties,” Journal of Alloys and Compounds, 891 (2022) 161968
https://doi.org/10.1016/j.jallcom.2021.161968
Shinjo, J; Panwisawas, C, “Chemical species mixing during direct energy deposition of bimetallic systems using titanium and dissimilar refractory metals for repair and biomedical applications,” Additive Manufacturing, 51 (2022) 102654
https://doi.org/10.1016/j.addma.2022.102654
Hara, T; Habe, M; Nakanishi, H; Fujimura, T; Sasai, R; Moriyoshi, C; Kawaguchi, S; Ichikuni, N; Shimazu, S, “Specific lift-up behaviour of acetate-intercalated layered yttrium hydroxide interlayer in water: application for heterogeneous Bronsted base catalysts toward Knoevenagel reactions,” Catalysis Science & Technology, 12 (2022) 2061-2070
https://doi.org/10.1039/d1cy02328d
2021年
Shinjo, J; Panwisawas, C, “Digital materials design by thermal-fluid science for multi-metal additive manufacturing,” Acta Materialia, 210 (2021) 116825
https://doi.org/10.1016/j.actamat.2021.116825
Panwisawas, C; Gong, YL; Tang, YT; Reed, RC; Shinjo, J, “Additive manufacturability of superalloys: Process-induced porosity, cooling rate and metal vapour,” Additive Manufacturing, 47 (2021) 102339
https://doi.org/10.1016/j.addma.2021.102339
2020年
Arakawa, K; Marinica, MC; Fitzgerald, S; Proville, L; Duc, NM; Dudarev, SL; Ma, PW; Swinburne, TD; Goryaeva, AM; Yamada, T; Amino, T; Arai, S; Yamamoto, Y; Higuchi, K; Tanaka, N; Yasuda, H; Yasuda, T; Mori, H, “Quantum de-trapping and transport of heavy defects in tungsten,” Nature Materials, 19 (2020) 508-511
https://doi.org/10.1038/s41563-019-0584-0
Du, JP; Geng, WT; Arakawa, K; Li, J; Ogata, S, “Hydrogen-Enhanced Vacancy Diffusion in Metals,” Journal of Physical Chemistry Letters, 11 (2020) 7015-7020
https://doi.org/10.1021/acs.jpclett.0c01798
2018年
Suzuki, A; Kitagawa, H; Ido, S; Pham, AH; Morito, S; Etoh, T; Kikuchi, K, “Microstructure control of Bi0.4Sb1.6Te3 thermoelectric material by pulse-current sintering under cyclic uniaxial pressure,” Journal of Alloys and Compounds, 742 (2018) 240-247
https://doi.org/10.1016/j.jallcom.2018.01.269
●科研費(2018年以降実績)
・新城淳史，基盤研究(B)，ISS実験研究成果の社会還元のための噴霧シミュレータ開発と噴霧物理解明，2018年4月1日～2020年3月31日
・新城淳史，基盤研究(B)，新規開発した微粒化・遷臨界蒸発モデルによる航空エンジン燃焼器性能向上の解析，2020年4月1日～2023年3月31日
・荒河一渡，基盤研究(A)，点欠陥を骨組みとする新しい同素変態―鉄鋼材料の新たな高強度化法の開拓，2020年4月1日～2024年3月31日
・荒河一渡，基盤研究(A)，金属中の水素がもたらす欠陥の異常挙動の解明：水素脆化を支配する欠陥の学理構築，2025年4月1日～2029年3月31日
●受託研究(件数と総額)
2018年度 3件 16,681千円
2019年度 2件 1,616千円
2020年度 2件 4,869千円
2021年度 5件 12,677千円
2022年度 4件 18,470千円
●共同研究(件数と総額)
2018年度 6件 13,481千円
2019年度 7件 70,783千円
2020年度 6件 49,333千円
2021年度 10件 81,014千円
2022年度 5件 89,121千円