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Proceedings Papers

Change of Crack Initiation and Propagation Modes in Hydrogen-Related Failure of a Precipitation-Strengthened Ni-Based Superalloy 718 Under Internal and External Hydrogen Conditions

Yuhei Ogawa, Osamu Takakuwa, Saburo Okazaki, Saburo Matsuoka, Hisao Matsunaga
Proc. ASME. PVP2019, Volume 6B: Materials and Fabrication, V06BT06A025, July 14–19, 2019
Paper No: PVP2019-93204
DOI: https://doi.org/10.1115/PVP2019-93204
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Topics: Failure, Fracture (Materials), Hydrogen, Precipitation, Superalloys, Fracture (Process), Ductility, Deformation, Annealing, Brittleness
Proceedings Papers

Temperature Dependence of Fatigue Crack Growth in Low-Carbon Steel Under Gaseous Hydrogen

Osamu Takakuwa, Yuhei Ogawa, Saburo Okazaki, Hisao Matsunaga, Saburo Matsuoka
Proc. ASME. PVP2019, Volume 6B: Materials and Fabrication, V06BT06A029, July 14–19, 2019
Paper No: PVP2019-93451
DOI: https://doi.org/10.1115/PVP2019-93451
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Topics: Carbon, Fatigue cracks, Hydrogen, Steel, Temperature effects, Plasticity, Temperature, Fracture (Materials), Electron backscatter diffraction, Wakes
Proceedings Papers

Fracture and Deformation Behavior in Slow-Strain-Rate Tensile Testing of Cu–Ni Alloy With Internal Hydrogen

Kentaro Wada, Junichiro Yamabe, Yuhei Ogawa, Osamu Takakuwa, Takashi Iijima, Hisao Matsunaga
Proc. ASME. PVP2019, Volume 6B: Materials and Fabrication, V06BT06A030, July 14–19, 2019
Paper No: PVP2019-93477
DOI: https://doi.org/10.1115/PVP2019-93477
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Topics: Alloys, Deformation, Fracture (Materials), Fracture (Process), Hydrogen, Nickel alloys, Tensile testing
Proceedings Papers

Temperature Dependence of Fatigue Crack Growth in Low-Alloy Steel Under Gaseous Hydrogen

Osamu Takakuwa, Saburo Matsuoka, Saburo Okazaki, Michio Yoshikawa, Junichiro Yamabe, Hisao Matsunaga
Proc. ASME. PVP2018, Volume 6B: Materials and Fabrication, V06BT06A033, July 15–20, 2018
Paper No: PVP2018-84438
DOI: https://doi.org/10.1115/PVP2018-84438
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Topics: Alloys, Fatigue cracks, Hydrogen, Steel, Temperature effects, Temperature, Binding energy, Dislocations, Pressure, ASTM International
Proceedings Papers

Hydrogen-Assisted Fatigue Crack Propagation in a Commercially Pure BCC Iron

Domas Birenis, Yuhei Ogawa, Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Øystein Prytz, Annett Thøgersen
Proc. ASME. PVP2018, Volume 6B: Materials and Fabrication, V06BT06A039, July 15–20, 2018
Paper No: PVP2018-84783
DOI: https://doi.org/10.1115/PVP2018-84783
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Topics: Fatigue cracks, Hydrogen, Iron, Fracture (Materials), Fracture (Process), Dislocations, Deformation, Electron microscopy, Fatigue, Plasticity
Proceedings Papers

Hydrogen-Assisted Degradation of High-Strength Stainless Steel With a Newly Developed Aluminum-Based Coating in High-Pressure Hydrogen Gas Environment

Junichiro Yamabe, Tohru Awane, Osamu Takakuwa, Saburo Matsuoka
Proc. ASME. PVP2017, Volume 6B: Materials and Fabrication, V06BT06A038, July 16–20, 2017
Paper No: PVP2017-65542
DOI: https://doi.org/10.1115/PVP2017-65542
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Topics: Aluminum, Coating processes, Coatings, High pressure (Physics), Hydrogen, Stainless steel, Fatigue properties, Cycles, Diffusion (Physics), Fatigue life
Proceedings Papers

Recent Progress on Interpretation of Tensile Ductility Loss for Various Austenitic Stainless Steels With External and Internal Hydrogen

Osamu Takakuwa, Junichiro Yamabe, Hisao Matsunaga, Yoshiyuki Furuya, Saburo Matsuoka
Proc. ASME. PVP2017, Volume 6B: Materials and Fabrication, V06BT06A041, July 16–20, 2017
Paper No: PVP2017-65671
DOI: https://doi.org/10.1115/PVP2017-65671
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Topics: Ductility, Hydrogen, Stainless steel, Fracture (Materials), Fracture (Process), Steel, Alloys, High pressure (Physics), Metals, Nickel
Proceedings Papers

Effect of Indentation Load on Vickers Hardness of Austenitic Stainless Steel After Hydrogen Charging

Osamu Takakuwa, Yuta Mano, Hitoshi Soyama
Proc. ASME. PVP2014, Volume 6B: Materials and Fabrication, V06BT06A011, July 20–24, 2014
Paper No: PVP2014-28280
DOI: https://doi.org/10.1115/PVP2014-28280
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Topics: Hydrogen, Stainless steel, Stress, Vickers hardness testing, Absorption, Deformation, Hardening