KH. Ryou, SH. Lim, KH. Lim, S. Hong, GD. Sim, S. Nambu, PP. Choi,
"Fabrication of architechturally designed steel for improving isotropy of mechanical properties using directed energy deposition"
Additive Manufacturing, 84 (2024) 104128
https://doi.org/10.1016/j.addma.2024.104128

S. Jimbo, S. Nambu
"Crystallographic Analysis on the Lower Bainite Formation at the Austenite Grain Boundary in Fe-0.6 C-0.8 Mn-1.8 Si Steel in the Initial Stage of Transformation"
ISIJ International, 64 (2024) 338-344.
https://doi.org/10.2355/isijinternational.ISIJINT-2023-155

S. Liu, S. Nambu
"A multi-scale study on the effect of interfacial microstructure on interfacial strength and fracture behaviour in Fe/Ni bonded interfaces",
Materials Science and Engineering: A884 (2023) 145567
https://doi.org/10.1016/j.msea.2023.145567

HJ Im, KH Ryou, TH Kang, S. Jimbo, S. Nambu, J.Han,PP Choi,
"Thermally driven changes in the microstructure and mechanical properties of martensitic 15–5 precipitation-hardened stainless steel during directed energy deposition",
Additive Manufacturing, 74 (2023) 103729
https://doi.org/10.1016/j.addma.2023.103729

S. Liu, S. Nambu,
“Effects of interfacial energy on interfacial strength and work of adhesion in bcc-Fe tilt interfaces: A molecular dynamic study”,
Materials Today Communications, 36 (2023) 106512
https://doi.org/10.1016/j.mtcomm.2023.106512

S. Jimbo, S. Nambu,
“Crystallographic Analysis on the Upper Bainite Formation at the Austenite Grain Boundary in Fe-0.6 C-0.8 Mn-1.8 Si Steel in the Initial Stage of Transformation”,
Crystals, 13 (2023) 414.
https://doi.org/10.3390/cryst13030414

S. Jimbo, S. Nambu,
“Three-Dimensional Observation of Upper Bainite in the Initial Stage of Transformation in 0.4 wt% C TRIP Steel”,
Metals, 13 (2023) 355.
https://doi.org/10.3390/met13020355

JY. Lin, ZH. Lai, T. Otsuki, HW. Yen, S. Nambu,
“Gradient microstructure and interfacial strength of CoCrFeMnNi high-entropy alloy in solid-state ultrasonic welding”,
Materials Science and Engineering A, 825 (2021) 141885.
https://doi.org/10.1016/j.msea.2021.141885

M. Liu, JY. Lin, S. Nambu, P. Wang, HL. Chen, SE. Shin, L. Zhang, T. Koseki,
“Investigation of work hardening behavior in multilayered steels architected by twinning induced plasticity steel and martensitic steel during uniaxial tension”,
Materials Science and Engineering A, 811 (2021) 140996.
https://doi.org/10.1016/j.msea.2021.140996

T. Niho, S. Nambu, K. Nagato, M. Nakao,
“Conditions of warm ausforming of low-alloy medium-carbon steel for making fully martensitic microstructure and its refining effect of martensite”,
Materials Today Communications 26, (2021) 102080.
https://doi.org/10.1016/j.mtcomm.2021.102080

JY. Lin, S. Nambu, M. Liu, T. Koseki,
“Influence of Al and Ni interlayers on interfacial strength evolution during ultrasonic welding of ultra-low-carbon steel and pure Ti”,
Materials Science and Engineering A, (2020) 140073.
https://doi.org/10.1016/j.msea.2020.140073

K. Kimura, K. Kwak, S. Nambu, T. Koseki,
“Nondestructive evaluation of macro segregation in creep strength enhanced 9Cr-1Mo-V-Nb Steel”,
Scripta Materialia, 188 (2020) 179-182.
https://doi.org/10.1016/j.scriptamat.2020.07.039

M. Liu, JY. Lin, P. Wang, SE. Shin, S. Nambu, L. Zhang, T. Koseki,
“Strudy of deformation behaviors of martensitic steel quenched at ultralow temperature”,
Materials Science and Engineering A, 785 (2020) 139399.
https://doi.org/10.1016/j.msea.2020.139399

SE. Shin, S. Nambu, H. Kim, J. Inoue, T. Koseki, SJ. Lee,
“Evaluation of factors influencing the lath martensitic deformation behavior of multi-layered steels”,
Materials Science and Engineering A, 785 (2020) 139353.
https://doi.org/10.1016/j.msea.2020.139353

KH. Ryou, S. Nambu, T. Koseki,
“Effect of carbon content on selection of slip system during uniaxial tensile deformation of lath martensite”,
Materials Science and Engineering A, 777 (2020) 139090.
https://doi.org/10.1016/j.msea.2020.139090

新野拓，井上純哉，小島真由美，南部将一，小関敏彦，
“低炭素鋼ラスマルテンサイトの加工硬化挙動に及ぼす固溶炭素の影響”，
鉄と鋼，106 (2020) pp.488-496.
https://doi.org/10.2355/tetsutohagane.TETSU-2019-109

JY. Lin, S. Nambu, T. Koseki,
“Interfacial phenomena during ultrasonic welding of ultra-low-carbon steel and pure Ti”,
Scripta Materialia, 178 (2020) pp.218-222.
https://doi.org/10.1016/j.scriptamat.2019.11.037

JY. Lin, S. Nambu, T. Koseki,
“Evolution of bonding interface during ultrasonic welding between Ni and steels with various microstructure”,
ISIJ International, 60 (2020) pp.330-336.
https://doi.org/10.2355/isijinternational.ISIJINT-2019-369

JY. Lin, S. Nambu, K. Pongmorakot, T. Koseki,
“Effect of surface roughness on bonding interface formation of steel and Ni by ultrasonic welding”,
Science and Technology of Welding and Joining, 25 (2020) pp.157-163.
https://doi.org/10.1080/13621718.2019.1660461

南部将一，
”高Cr耐熱鋼のクリープ変形中における組織変化と特性予測”，
熱処理，60 (2020) pp.55-58.

SE. Shin, SJ. Lee, S. Nambu, T. Koseki,
“Hydrogen embrittlement in multilayer steel consisting of martensitic and twinning-induced plasticity steels”,
Materials Science and Engineering 756A, (2019) pp.508-517.
https://doi.org/10.1016/j.msea.2019.04.085

JY. Lin, S. Nambu, T. Koseki,
“Evolution of bonding interface during ultrasonic welding between steel and aluminium alloy”,
Science and Technology of Welding and Joining, 24 (2019) pp.83-91.
https://doi.org/10.1080/13621718.2018.1491376

M. Liu, S. Nambu, K. Zhou, PF. Wang, G. Lu, C. Lu, KA. Tieu, T. Koseki,
“On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals: A three-dimensional crystal plasticity finite element method study”,
Metallurgical and Materials Transactions, 50A (2019) pp. 2399-2412.
https://doi.org/10.1007/s11661-019-05178-0

before 2018 (selected papers)

S. Nambu, K. Seto, JY. Lin, T. Koseki, “Development of a bonding interface between steel/steel and steel/Ni by ultrasonic welding”, Science and Technology of Welding and Joining, 23 (2018) pp.687-692.

S. Nambu, Y. Takizawa, M. Ojima, J. Inoue, and T. Koseki, “Crystallographic analysis of transformation behavior of acicular ferrite from B1-type compounds in steels”, ISIJ International, 57 (2017) pp.1254-1259.

T. Niino, J. Inoue, M. Ojima, S. Nambu, and T. Koseki, “Effect of solute carbon on the work hardening behavior of lath martensite in low-carbon steel”, ISIJ International, 57 (2017) pp.181-188.

K. Pongmorakot, S. Nambu, Y. Shibuta, and T. Koseki, “Investigation on the mechanism of steel/steel solid-state bonding at low temperatures”, Science and Technology of Welding and Joining, 22 (2017) pp.257-263.

M.Y. Seok, J.A. Lee, D.H. Lee, U. Ramamurty, S. Nambu, T. Koseki, and J. Jang, “Decoupling the contributions of constituent layers to the strength and ductility of a multi-layered steel”, Acta Materialia, 121 (2016) 164-172.

H. Na, S. Nambu, M. Ojima, J. Inoue and T. Koseki, “Crystallographic and microstructural studies of lath martensitic steel during tensile deformation”, Metallurgical and Materials Transactions 45A (2014) pp.5029-5043.

T. Koseki, J. Inoue and S. Nambu, “Development of multilayer steels for improved combinations of high strength and high ductility”, Materials Transactions JIM, 55 (2014) pp. 227-237.

S. Nambu, N. Shibuta, M. Ojima, J. Inoue, T. Koseki and H.K.D.H Bhadeshia, “In-situ observations and crystallographic analysis of martensitic transformation in steel,” Acta Materialia, 61 (2013) pp.4831-4839.

J. Taendl, S. Nambu, J. Inoue, N. Enzinger and T. Koseki, “Friction stir welding of multilayered steel,” Science and Technology of Welding and Joining, Vol. 17 (2012) pp. 244-253.

M. Ojima, J. Inoue, S. Nambu, P.G. Xu, K. Akita, H. Suzuki and T. Koseki, “Stress partitioning behavior of multilayered steels during tensile deformation measured by in situ neutron diffraction,” Scripta Materialia, Vol. 66 (2012) pp. 139-142.

T. Araki, M. Koba, S. Nambu, J. Inoue and T. Koseki, “Reactive transient liquid phase bonding between AZ31 magnesium alloy and low carbon steel” Materials Transactions JIM, 52 (2011) pp. 568-571.

M. Michiuchi, S. Nambu, Y. Ishimoto, J. Inoue and T. Koseki, “Relationship between local deformation behavior and crystallographic features of as-quenched lath martensite during uniaxial tensile deformation,” Acta Materialia, 57 (2009) pp.5283-5291.

S. Nambu, M. Michiuchi, J. Inoue and T. Koseki, “Effect of interfacial bonding strength on tensile ductility of multilayered steel composites,” Composites Science and Technology, 69 (2009) pp.1936-1941.

S. Nambu, M. Michiuchi, Y. Ishimoto, K. Asakura, J. Inoue and T. Koseki, “Transition in deformation behavior of martensitic steel during large deformation under uniaxial tensile loading,” Scripta Materialia, 60 (2009) pp.221-224.

J. Inoue, S. Nambu, Y. Ishimoto and T. Koseki, “Fracture elongation of brittle/ductile multilayered steel composites with a strong interface,” Scripta Materialia, 59 (2008) pp.1055-1058.

S. Nambu and M. Enoki, “Smart Stress Memory Patch for Fatigue Damage of structure,” Materials Transactions JIM, 48 (2007) pp.1244-1248.