研究成果 1982 2020

フィルター
記事
2020

Plastic deformation sequence and strain gradient characteristics of hydrogen-induced delayed crack propagation in single-crystalline Fe–Si alloy

Huynh, T. T., Koyama, M., Takahashi, Y., Hamada, S., Tsuzaki, K. & Noguchi, H., 3 15 2020, : : Scripta Materialia. 178, p. 99-103 5 p.

研究成果: ジャーナルへの寄稿記事

crack propagation
plastic deformation
Hydrogen
Crack propagation
Plastic deformation

Revealing the mechanism of critical root radius in notch fatigue limit based on crack closure concept

Li, B., Jiang, C., Noguchi, H. & Liu, L., 1 2020, : : International Journal of Fatigue. 130, 105261.

研究成果: ジャーナルへの寄稿記事

Fatigue Crack Propagation
Fatigue Limit
Crack Closure
Fatigue Crack Growth
Crack closure
2019
2 引用 (Scopus)

1-second-resolved strain mapping in Ti-6Al-4V alloys during dwell fatigue in SEM by video sampling moiré

Wang, Q., Ri, S., Maenosono, A., Tanaka, Y. & Koyama, M., 6 1 2019, : : Mechanics of Materials. 133, p. 63-70 8 p.

研究成果: ジャーナルへの寄稿記事

dwell
Electron microscopes
electron microscopes
sampling
Fatigue of materials

Abnormally enhanced diamagnetism in Al-Zn-Mg alloys

Nishimura, K., Matsuda, K., Lee, S., Nunomura, N., Shimano, T., Bendo, A., Watanabe, K., Tsuchiya, T., Namiki, T., Toda, H. & Yamaguchi, M., 2 5 2019, : : Journal of Alloys and Compounds. 774, p. 405-409 5 p.

研究成果: ジャーナルへの寄稿記事

Diamagnetism
Magnetization
Aging of materials
Heat treatment
Vacancies

Al-10Mg 合金における応力腐食割れ挙動に及ぼす水素の影響

Hirayama, K., Toda, H., Shimizu, K., Uesugi, K., Takeuchi, A. & Masunaga, R., 1 1 2019, : : Keikinzoku/Journal of Japan Institute of Light Metals. 69, 4, p. 223-227 5 p.

研究成果: ジャーナルへの寄稿記事

公開
Stress corrosion cracking
Hydrogen
Corrosion
Cracks
Synchrotrons

An unreported precipitate orientation relationship in Al-Zn-Mg based alloys

Bendo, A., Matsuda, K., Lervik, A., Tsuru, T., Nishimura, K., Nunomura, N., Holmestad, R., Marioara, C. D., Shimizu, K., Toda, H. & Yamaguchi, M., 12 2019, : : Materials Characterization. 158, 109958.

研究成果: ジャーナルへの寄稿記事

Precipitates
precipitates
ledges
Transmission electron microscopy
transmission electron microscopy

Assessment of hydrogen embrittlement via image-based techniques in Al–Zn–Mg–Cu aluminum alloys

Su, H., Toda, H., Shimizu, K., Uesugi, K., Takeuchi, A. & Watanabe, Y., 9 1 2019, : : Acta Materialia. 176, p. 96-108 13 p.

研究成果: ジャーナルへの寄稿記事

Hydrogen embrittlement
Hydrogen
Aluminum alloys
Intermetallics
Precipitates

Assessment of predominant microstructural features controlling 3D short crack growth behavior via a surrogate approach in Ti-6Al-4V

Hassanipour, M., Watanabe, S., Hirayama, K., Li, H., Toda, H., Uesugi, K. & Takeuchi, A., 3 28 2019, : : Materials Science and Engineering A. 751, p. 351-362 12 p.

研究成果: ジャーナルへの寄稿記事

short cracks
Crack propagation
cracks
Cracks
shear stress
3 引用 (Scopus)

Characterisation of structural similarities of precipitates in Mg–Zn and Al–Zn–Mg alloys systems

Bendo, A., Maeda, T., Matsuda, K., Lervik, A., Holmestad, R., Marioara, C. D., Nishimura, K., Nunomura, N., Toda, H., Yamaguchi, M., Ikeda, K. I. & Homma, T., 11 2 2019, : : Philosophical Magazine. 99, 21, p. 2619-2635 17 p.

研究成果: ジャーナルへの寄稿記事

precipitates
hexagons
bricks
cells
aspect ratio
1 引用 (Scopus)

Comparative study of hydrogen-induced intergranular fracture behavior in Ni and Cu–Ni alloy at ambient and cryogenic temperatures

Wada, K., Yamabe, J., Ogawa, Y., Takakuwa, O., Iijima, T. & Matsunaga, H., 10 24 2019, : : Materials Science and Engineering A. 766, 138349.

研究成果: ジャーナルへの寄稿記事

cryogenic temperature
Cryogenics
ambient temperature
Hydrogen
hydrogen embrittlement

Crystallographic selection rule for the propagation mode of microstructurally small fatigue crack in a laminated Ti-6Al-4V alloy: Roles of basal and pyramidal slips

Maenosono, A., Koyama, M., Tanaka, Y., Ri, S., Wang, Q. & Noguchi, H., 11 1 2019, : : International Journal of Fatigue. 128, 105200.

研究成果: ジャーナルへの寄稿記事

Fatigue Crack Growth
Fatigue Crack
Selection Rules
Fatigue crack propagation
Slip

Detection of hydrogen effusion before, during, and after martensitic transformation: Example of multiphase transformation-induced plasticity steel

Koyama, M., Yamasaki, D., Ikeda, A., Hojo, T., Akiyama, E., Takai, K. & Tsuzaki, K., 10 4 2019, : : International Journal of Hydrogen Energy. 44, 47, p. 26028-26035 8 p.

研究成果: ジャーナルへの寄稿記事

Martensitic transformations
martensitic transformation
plastic properties
Plasticity
steels
公開
Electron diffraction
Plastic deformation
plastics
Imaging techniques
Electrons
2 引用 (Scopus)
Steel
crack tips
Crack tips
Crack propagation
cracks
stress intensity factors
Steel
Stress Intensity Factor
Stress intensity factors
Crack closure
1 引用 (Scopus)

Effect of Copper Addition on Precipitation Behavior near Grain Boundary in AlZnMg Alloy

Matsuda, K., Yasumoto, T., Bendo, A., Tsuchiya, T., Lee, S., Nishimura, K., Nunomura, N., Marioara, C. D., Levik, A., Holmestad, R., Toda, H., Yamaguchi, M., Ikeda, K. I., Homma, T. & Ikeno, S., 1 1 2019, : : Materials Transactions. 60, 8, p. 1688-1696 9 p.

研究成果: ジャーナルへの寄稿記事

公開
Precipitates
Copper
precipitates
Grain boundaries
hardness
1 引用 (Scopus)

Effect of defects on the fatigue limit of Ni-based superalloy 718 with different grain sizes

Kevinsanny, Okazaki, S., Takakuwa, O., Ogawa, Y., Okita, K., Funakoshi, Y., Yamabe, J., Matsuoka, S. & Matsunaga, H., 5 1 2019, : : Fatigue and Fracture of Engineering Materials and Structures. 42, 5, p. 1203-1213 11 p.

研究成果: ジャーナルへの寄稿記事

Superalloys
Fatigue of materials
Defects
Cracks
Microstructure

Effect of Hydrogen on the Substructure of Lenticular Martensite in Fe-31Ni Alloy

Shibata, A., Enoki, M., Saji, N., Tai, H., Koyama, M., Ohtani, H., Tsuji, N. & Tsuzaki, K., 9 15 2019, : : Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 50, 9, p. 4027-4036 10 p.

研究成果: ジャーナルへの寄稿記事

martensite
substructures
Martensite
Hydrogen
hydrogen

Effects of 3D microstructural distribution on short crack growth behavior in two bimodal Ti–6Al–4V alloys

Hassanipour, M., Watanabe, S., Hirayama, K., Toda, H., Uesugi, K. & Takeuchi, A., 10 24 2019, : : Materials Science and Engineering A. 766, 138264.

研究成果: ジャーナルへの寄稿記事

short cracks
Crack propagation
Cracks
cracks
microstructure

Enhancement of hydrogen embrittlement resistance of Fe-Mn-C twinning-induced plasticity steel by partial recrystallization technique

Park, T. M., Kim, M. T., Baik, K. H., Koyama, M. & Han, J., 5 1 2019, : : Materials Characterization. 151, p. 221-226 6 p.

研究成果: ジャーナルへの寄稿記事

hydrogen embrittlement
Hydrogen embrittlement
Steel
Twinning
twinning

Evolution of quasi-brittle hydrogen-assisted damages in a dual-phase steel

Kumamoto, T., Koyama, M., Sato, K. & Tsuzaki, K., 1 1 2019, : : Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals. 83, 7, p. 221-230 10 p.

研究成果: ジャーナルへの寄稿記事

公開
Steel
Hydrogen
steels
damage
hydrogen

Evolution of quasi-brittle hydrogen-assisted damages in a dual-phase steel

Kumamoto, T., Koyama, M., Sato, K. & Tsuzaki, K., 1 1 2019, : : Materials Transactions. 60, 11, p. 2368-2377 10 p.

研究成果: ジャーナルへの寄稿記事

Steel
Hydrogen
steels
damage
hydrogen

Experimental confirmation of grain boundary magnetism in FeSi and FeSn alloys by TEM-EELS

Ii, S., Hirayama, K. & Tsurekawa, S., 1 1 2019, : : Materials Transactions. 60, 5, p. 636-641 6 p.

研究成果: ジャーナルへの寄稿記事

Electron energy loss spectroscopy
Magnetism
Grain boundaries
grain boundaries
Transmission electron microscopy

Fatigue behavior in an Fe-N binary ferritic steel: Similarity and difference between carbon and nitrogen

Habib, K., Koyama, M., Sakurada, E., Yoshimura, N., Yokoi, T., Ushioda, K., Tsuzaki, K. & Noguchi, H., 1 1 2019, : : isij international. 59, p. 186-191 6 p.

研究成果: ジャーナルへの寄稿記事

Steel
Ferritic steel
Nitrogen
Carbon
Fatigue of materials

Fatigue Resistance of Laminated and Non-laminated TRIP-maraging Steels: Crack Roughness vs Tensile Strength

Zhang, Z., Koyama, M., Wang, M., Tasan, C. C. & Noguchi, H., 3 15 2019, : : Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 50, 3, p. 1142-1145 4 p.

研究成果: ジャーナルへの寄稿記事

maraging steels
Maraging steel
plastic properties
tensile strength
Plasticity
4 引用 (Scopus)

First-principles calculation of multiple hydrogen segregation along aluminum grain boundaries

Yamaguchi, M., Ebihara, K. I., Itakura, M., Tsuru, T., Matsuda, K. & Toda, H., 1 1 2019, : : Computational Materials Science. 156, p. 368-375 8 p.

研究成果: ジャーナルへの寄稿記事

First-principles Calculation
Grain Boundary
Segregation
Aluminum
Hydrogen
Martensitic transformations
martensitic transformation
Hydrogen
Iron
iron

Grain refinement effect on hydrogen embrittlement resistance of an equiatomic CoCrFeMnNi high-entropy alloy

Koyama, M., Ichii, K. & Tsuzaki, K., 6 21 2019, : : International Journal of Hydrogen Energy. 44, 31, p. 17163-17167 5 p.

研究成果: ジャーナルへの寄稿記事

hydrogen embrittlement
Hydrogen embrittlement
Grain refinement
Entropy
entropy
公開
austenitic stainless steels
Austenitic stainless steel
Entropy
cracks
Crack propagation

Hydrogen-assisted crack propagation in α-iron during elasto-plastic fracture toughness tests

Birenis, D., Ogawa, Y., Matsunaga, H., Takakuwa, O., Yamabe, J., Prytz, Ø. & Thøgersen, A., 5 22 2019, : : Materials Science and Engineering A. 756, p. 396-404 9 p.

研究成果: ジャーナルへの寄稿記事

crack propagation
fracture strength
Fracture toughness
Hydrogen
Crack propagation

Hydrogen desorption behavior in Al-8%Zn-1%Mg alloy

Fujihara, H., Toda, H., Shimizu, K., Takeuchi, A. & Uesugi, K., 1 1 2019, : : Keikinzoku/Journal of Japan Institute of Light Metals. 69, 3, p. 186-193 8 p.

研究成果: ジャーナルへの寄稿記事

公開
Hydrogen
Desorption
Thermal desorption
Hydrogen embrittlement
Grain boundaries
2 引用 (Scopus)

Hydrogen-induced ductility loss of precipitation-strengthened Fe-Ni-Cr-based superalloy

Takakuwa, O., Ogawa, Y., Yamabe, J. & Matsunaga, H., 1 2 2019, : : Materials Science and Engineering A. 739, p. 335-342 8 p.

研究成果: ジャーナルへの寄稿記事

heat resistant alloys
ductility
Superalloys
Ductility
Hydrogen

Hydrogen partitioning behavior and related hydrogen embrittlement in Al-Zn-Mg alloys

Shimizu, K., Toda, H., Fujihara, H., Hirayama, K., Uesugi, K. & Takeuchi, A., 7 1 2019, : : Engineering Fracture Mechanics. 216, 106503.

研究成果: ジャーナルへの寄稿記事

Hydrogen embrittlement
Hydrogen
Precipitates
Grain boundaries
Mg-Al-Zn-Mn-Si-Cu alloy

Influence of stress re-distribution on hydrogen-induced fatigue crack propagation

Sasaki, D., Koyama, M. & Noguchi, H., 1 1 2019, : : isij international. 59, 9, p. 1683-1690 8 p.

研究成果: ジャーナルへの寄稿記事

公開
Fatigue crack propagation
Hydrogen
Pearlite
Crack tips
Crack propagation
1 引用 (Scopus)
high strength alloys
High strength alloys
Crack tips
crack tips
aluminum alloys

Lowering Strain Rate Simultaneously Enhances Carbon- and Hydrogen-Induced Mechanical Degradation in an Fe-33Mn-1.1C Steel

Tuğluca, I. B., Koyama, M., Shimomura, Y., Bal, B., Canadinc, D., Akiyama, E. & Tsuzaki, K., 3 15 2019, : : Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 50, 3, p. 1137-1141 5 p.

研究成果: ジャーナルへの寄稿記事

Steel
strain rate
Strain rate
Hydrogen
Carbon

Mode I fatigue crack growth induced by strain-aging in precipitation-hardened aluminum alloys

Anis, S. F., Koyama, M., Hamada, S. & Noguchi, H., 12 1 2019, : : Theoretical and Applied Fracture Mechanics. 104, 102340.

研究成果: ジャーナルへの寄稿記事

Fatigue Crack Growth
precipitation hardening
Aluminum Alloy
Fatigue crack propagation
aluminum alloys

Optimization of mechanical properties in aluminum alloys via hydrogen partitioning control

Toda, H., Yamaguchi, M., Matsuda, K., Shimizu, K., Hirayama, K., Su, H., Fujihara, H., Ebihara, K., Itakura, M., Tsuru, T., Nishimura, K., Nunomura, N., Lee, S., Tsuchiya, T., Takeuchi, A. & Uesugi, K., 2 1 2019, : : Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan. 105, 2, p. 118-131 14 p.

研究成果: ジャーナルへの寄稿記事

公開
hydrogen embrittlement
Hydrogen embrittlement
aluminum alloys
Hydrogen
Aluminum alloys
1 引用 (Scopus)

Phase Stability Effects on Hydrogen Embrittlement Resistance in Martensite–Reverted Austenite Steels

Cameron, B. C., Koyama, M. & Tasan, C. C., 1 1 2019, : : Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 50, 1, p. 29-34 6 p.

研究成果: ジャーナルへの寄稿記事

hydrogen embrittlement
Hydrogen embrittlement
Phase stability
Steel
austenite

Pronounced transition of crack initiation and propagation modes in the hydrogen-related failure of a Ni-based superalloy 718 under internal and external hydrogen conditions

Ogawa, Y., Takakuwa, O., Okazaki, S., Okita, K., Funakoshi, Y., Matsunaga, H. & Matsuoka, S., 1 1 2019, (受理済み/印刷中) : : Corrosion Science. 108186.

研究成果: ジャーナルへの寄稿記事

Superalloys
Crack initiation
Hydrogen
Crack propagation
Failure modes
4 引用 (Scopus)

Resistance to mechanically small fatigue crack growth in ultrafine grained interstitial-free steel fabricated by accumulative roll-bonding

Lin, X., Koyama, M., Gao, S., Tsuji, N., Tsuzaki, K. & Noguchi, H., 1 1 2019, : : International Journal of Fatigue. 118, p. 117-125 9 p.

研究成果: ジャーナルへの寄稿記事

Roll bonding
Fatigue Crack Growth
Steel
Fatigue crack propagation
Fatigue
1 引用 (Scopus)

Revisiting the effects of hydrogen on deformation-induced γ-ε martensitic transformation

Koyama, M., Terao, N. & Tsuzaki, K., 8 15 2019, : : Materials Letters. 249, p. 197-200 4 p.

研究成果: ジャーナルへの寄稿記事

Martensitic transformations
martensitic transformation
Hydrogen
martensite
Martensite

Role of hydrogen-charging on nucleation and growth of ductile damage in austenitic stainless steels

Maire, E., Grabon, S., Adrien, J., Lorenzino, P., Asanuma, Y., Takakuwa, O. & Matsunaga, H., 1 1 2019, : : Materials. 12, 9, 1426.

研究成果: ジャーナルへの寄稿記事

公開
Austenitic stainless steel
Hydrogen
Nucleation
Packaging materials
Stainless Steel
Steel
Strain rate
Hydrogen
Gases
Nitrogen

Strain localization in copper canister FSW welds for spent nuclear fuel disposal

Forsström, A., Bossuyt, S., Yagodzinskyy, Y., Tsuzaki, K. & Hänninen, H., 9 2019, : : Journal of Nuclear Materials. 523, p. 347-359 13 p.

研究成果: ジャーナルへの寄稿記事

公開
cans
friction stir welding
spent fuels
Friction stir welding
nuclear fuels
Steel
Vacancies
Strain rate
Hydrogen
Martensite

Transformation-assisted hydrogen desorption during deformation in steels: Examples of α′- and ε-Martensite

Hojo, T., Koyama, M., Terao, N., Tsuzaki, K. & Akiyama, E., 11 15 2019, : : International Journal of Hydrogen Energy. 44, 57, p. 30472-30477 6 p.

研究成果: ジャーナルへの寄稿記事

martensite
Martensite
Desorption
Martensitic transformations
martensitic transformation

Weakest region analysis of non-combustible Mg products fabricated by selective laser melting

Proaño, B., Miyahara, H., Matsumoto, T., Hamada, S., Sakai, H., Ogawa, K., Suyalatu & Noguchi, H., 10 1 2019, : : Theoretical and Applied Fracture Mechanics. 103, 102291.

研究成果: ジャーナルへの寄稿記事

Melting
melting
Laser
Lasers
products

X 9Cr-1Mo 㗰㒊㔞ホ

Tsuruta, H., Toda, H., Yatomi, M., Yoshida, K., Takeuchi, A., Uesugi, M., Tabuchi, M. & Hongou, H., 1 1 2019, : : Zairyo/Journal of the Society of Materials Science, Japan. 68, 8, p. 599-606 8 p.

研究成果: ジャーナルへの寄稿記事

公開
welded joints
Steel
Tomography
voids
Creep
2018
2 引用 (Scopus)

An unconventional hydrogen effect that suppresses thermal formation of the hcp phase in fcc steels

Koyama, M., Hirata, K., Abe, Y., Mitsuda, A., Iikubo, S. & Tsuzaki, K., 12 1 2018, : : Scientific reports. 8, 1, 16136.

研究成果: ジャーナルへの寄稿記事

Steel
Hydrogen
Hot Temperature
Thermodynamics
Iron