Publications

• 2026
• 2025
• 2024
• 2023

2026

• Hatakeyama T., Sawada K.

  Effect of accelerating voltages on indexing of SEM-EBSD via pattern matching

  Ultramicroscopy.284(2026)114387

  • 10.1016/j.ultramic.2026.114387

• Hatakeyama T., Sawada K., Kusano M., Watanabe M.

  Precipitation behavior and anisotropic creep deformation behavior of laser powder bed fusion processed Hastelloy X at 1173 K

  Materials Science and Engineering: A. 965 (2026) 150303

  • 10.1016/j.msea.2026.150303

• Hatakeyama T., Sawada K.

  Effect of Lattice Parameters of Master Pattern on EBSD Indexing via Pattern Matching

  Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals.90[1](2026)17-26

  • 10.2320/jinstmet.J202528

2025

• Sawada K., Taniuchi Y., Nojima T., Kimura K., Kimura T., Nomura K., Saito N., Morita A., Hayakawa H., Sugiuchi T., Ohbitsu K., Yaguchi M., Nishizawa K., Ozaki H., Fukunishi H., Ohi K., Nishioka T., Emi N., Okada H., Komai N., Hayashi K., Tominaga K.

  NONDESTRUCTIVE DETECTION OF CREEP DAMAGE IN ASME GRADE 91 STEEL WELDS

  Advances in Materials Technology for Fossil Power Plants.[2025](2025)960-968

  • 10.31399/asm.cp.am-epri-2024p0960

• Mitsuhara M., Sato K., Nomura K., Kimura T., Shioda Y., Sawada K., Kimura K., Nakashima H.

  CREEP STRENGTH AND MICROSTRUCTURE IN WELDED JOINTS OF ASME GR.91 TYPE 1 AND TYPE 2 STEELS

  Advances in Materials Technology for Fossil Power Plants.[2025](2025)760-765

  • 10.31399/asm.cp.am-epri-2024p0760

• Hatakeyama T., Sawada K., Suzuki M., Watanabe M.

  MICROSTRUCTURE OF MODIFIED 9CR-1MO STEEL MANUFACTURED VIA LASER POWDER BED FUSION

  Advances in Materials Technology for Fossil Power Plants.[2025](2025)365-372

  • 10.31399/asm.cp.am-epri-2024p0365

• Hatakeyama T., Ida S., Sawada K., Yoshimi K.

  Microstructure Development during Creep Deformation of 9Cr–1Mo–V–Nb Steel with Excess Nitrogen Introduced by Solution Nitriding – Multidimensional Scatter Diagram Analysis of STEM-EDS Maps by Machine Learning –

  Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan.111[9](2025)536-549

  • 10.2355/tetsutohagane.TETSU-2024-115

• Hatakeyama T., Ida S., Sawada K., Yoshimi K.

  Microstructure Development during Creep Deformation of 9Cr-1Mo-V-Nb Steel with Excess Nitrogen Introduced by Solution Nitriding – Multidimensional Scatter Diagram Analysis of STEM-EDS Maps by Machine Learning

  ISIJ International.65[10](2025)1529-1540

  • 10.2355/isijinternational.ISIJINT-2025-211

• Hatakeyama T., Sawada K.

  Creep damage evaluation of 18Cr–9Ni–3Cu–Nb–N steel by electron backscattered diffraction (EBSD) – comparison of traditional Hough Indexing and novel Spherical Indexing –

  Micron.199(2025)103908

  • 10.1016/j.micron.2025.103908

• Sawada K., Taniuchi Y., Nojima T., Sekido K., Hatakeyama T., Kimura K.

  Effect of Cyclic Stress Change on Creep Behavior in ASME P91 Steel

  Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan.111[2](2025)51-57

  • 10.2355/tetsutohagane.TETSU-2024-114

• Sekido N., Nagai H., Hatakeyama T., Yoshimi K., Sawada K.

  Microstructural Characteristics of Modified 9Cr-1Mo Steel with Low Creep Ductility

  ISIJ International.65[8](2025)1231-1238

  • 10.2355/isijinternational.ISIJINT-2025-049

2024

• Hatakeyama T., Sawada K.

  Precipitation behavior of the M23C6 phase on the coherent twin boundary of 25Cr-20Ni-Nb-N steel

  Materials Letters.363(2024)136277

  • 10.1016/j.matlet.2024.136277

• Hatakeyama T., Sawada K., Kusano M., Watanabe M.

  Significant creep-strength improvement in modified 9Cr-1Mo steel via microstructural control through laser powder bed fusion

  Additive Manufacturing.93(2024)104445

  • 10.1016/j.addma.2024.104445

• Sato K., Mitsuhara M., Nagata K., Kubushiro K., Nomura K., Kimura T., Shioda Y., Sawada K., Kimura K., Nakashima H.

  Effect of impurity elements on the creep rupture strength of Gr. 91 steel welded joints at 650 °C

  Materials Science and Engineering: A.903(2024)146669

  • 10.1016/j.msea.2024.146669

2023

• Hatakeyama T., Sawada K., Suzuki M., Watanabe M.

  Microstructure development of modified 9Cr-1Mo steel during laser powder bed fusion and heat treatment

  Additive Manufacturing.61(2023)103350

  • 10.1016/j.addma.2022.103350

• Hatakeyama, T., Sawada, K., Sekido, K., Kimura, K.

  Beneficial role of the grain boundary precipitates for intergranular creep fracture of 25Cr–20Ni–Nb–N steel

  Materials Science and Engineering: A.882(2023)145487

  • 10.1016/j.msea.2023.145487

• Hatakeyama, T., Sekido, K., Sawada, K.

  Prediction of Graphitization Behavior during Long-Term Creep in Carbon Steels

  ISIJ International.63[5](2023)910-918

  • 10.2355/isijinternational.ISIJINT-2022-558

• Ohtani T., Ishii Y., Tabuchi M., Hongo H., Sawada K.

  Creep-induced nonlinear acoustic characterizations and microstructural change in an austenitic stainless steel

  Materials Characterization.197(2023)112657

  • 10.1016/j.matchar.2023.112657