Yuichiro Koizumi
Ultragrain refinement of plain low carbon steel by cold-rolling and annealing of martensite
R Ueji, N Tsuji, Y Minamino, Y Koizumi
Acta Materialia 50 (16), 4177-4189, 2002
Formation of nanocrystalline surface layers in various metallic materials by near surface severe plastic deformation
M Sato, N Tsuji, Y Minaminob, Y Koizumi
Science and Technology of Advanced Materials 5 (1-2), 145-152, 2004
Toughness of ultrafine grained ferritic steels fabricated by ARB and annealing process
N Tsuji, S Okuno, Y Koizumi, Y Minamino
Materials transactions 45 (7), 2272-2281, 2004
Microstructural change of ultrafine-grained aluminum during high-speed plastic deformation
N Tsuji, T Toyoda, Y Minamino, Y Koizumi, T Yamane, M Komatsu, ...
Materials Science and Engineering: A 350 (1-2), 108-116, 2003
Build direction dependence of microstructure and high-temperature tensile property of Co–Cr–Mo alloy fabricated by electron beam melting
SH Sun, Y Koizumi, S Kurosu, YP Li, H Matsumoto, A Chiba
Acta Materialia 64, 154-168, 2014
Effect of rolling reduction on ultrafine grained structure and mechanical properties of low-carbon steel thermomechanically processed from martensite starting structure
R Ueji, N Tsuji, Y Minamino, Y Koizumi
Science and Technology of Advanced Materials 5 (1-2), 153, 2004
Strain-induced martensitic transformation near twin boundaries in a biomedical Co–Cr–Mo alloy with negative stacking fault energy
Y Koizumi, S Suzuki, K Yamanaka, BS Lee, K Sato, Y Li, S Kurosu, ...
Acta materialia 61 (5), 1648-1661, 2013
Microstructures and mechanical properties of bulk nanocrystalline Fe–Al–C alloys made by mechanically alloying with subsequent spark plasma sintering
Y Minamino, Y Koizumi, N Tsuji, N Hirohata, K Mizuuchi, Y Ohkanda
Science and Technology of Advanced Materials 5 (1-2), 133, 2004
Copper-catalyzed coupling of aryl halides and nitrite salts: a mild Ullmann-type synthesis of aromatic nitro compounds
S Saito, Y Koizumi
Tetrahedron letters 46 (28), 4715-4717, 2005
Phase and grain size inhomogeneity and their influences on creep behavior of Co–Cr–Mo alloy additive manufactured by electron beam melting
SH Sun, Y Koizumi, S Kurosu, YP Li, A Chiba
Acta Materialia 86, 305-318, 2015
Anodic oxide nanotube layers on Ti–Ta alloys: Substrate composition, microstructure and self-organization on two-size scales
H Tsuchiya, T Akaki, J Nakata, D Terada, N Tsuji, Y Koizumi, Y Minamino, ...
Corrosion Science 51 (7), 1528-1533, 2009
First demonstration of promising selective electron beam melting method for utilizing high-entropy alloys as engineering materials
T Fujieda, H Shiratori, K Kuwabara, T Kato, K Yamanaka, Y Koizumi, ...
Materials Letters 159, 12-15, 2015
Relationship between the microstructure and mechanical properties of an equiatomic AlCoCrFeNi high-entropy alloy fabricated by selective electron beam melting
H Shiratori, T Fujieda, K Yamanaka, Y Koizumi, K Kuwabara, T Kato, ...
Materials Science and Engineering: A 656, 39-46, 2016
CoCrFeNiTi-based high-entropy alloy with superior tensile strength and corrosion resistance achieved by a combination of additive manufacturing using selective electron beam …
T Fujieda, H Shiratori, K Kuwabara, M Hirota, T Kato, K Yamanaka, ...
Materials Letters 189, 148-151, 2017
In-situ fabrication and characterization of ultrafine structured Cu–TiC composites with high strength and high conductivity by mechanical milling
F Wang, Y Li, X Wang, Y Koizumi, Y Kenta, A Chiba
Journal of Alloys and Compounds 657, 122-132, 2016
Enhanced damping capacity of magnesium alloys by tensile twin boundaries
Y Cui, Y Li, S Sun, H Bian, H Huang, Z Wang, Y Koizumi, A Chiba
Scripta Materialia 101, 8-11, 2015
Hot forging characteristic of Ti–5Al–5V–5Mo–3Cr alloy with single metastable β microstructure
H Matsumoto, M Kitamura, Y Li, Y Koizumi, A Chiba
Materials Science and Engineering: A 611, 337-344, 2014
Suzuki segregation in Co–Ni-based superalloy at 973 K: An experimental and computational study by phase-field simulation
Y Koizumi, T Nukaya, S Suzuki, S Kurosu, Y Li, H Matsumoto, K Sato, ...
Acta materialia 60 (6-7), 2901-2915, 2012
Solid solubility of carbon in copper mechanically alloyed
T Yamane, H Okubo, K Hisayuki, N Oki, M Konishi, M Komatsu, ...
Journal of materials science letters 20 (3), 259-260, 2001
Effects of sigma phase and carbide on the wear behavior of CoCrMo alloys in Hanks' solution
Y Chen, Y Li, S Kurosu, K Yamanaka, N Tang, Y Koizumi, A Chiba
Wear 310 (1-2), 51-62, 2014
論文 1–20