Osamu Takakuwa

Associate Professor

Kyushu University

Japan

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Osamu Takakuwa is an Associate Professor at Kyushu University in Japan. His research primarily focuses on hydrogen effects in metallic materials, including fatigue crack behavior and hydrogen embrittlement in various alloys. Recent publications include studies on hydrogen absorption in Fe-Cr-Ni systems, crack initiation in Ni-based superalloys, and the deformation mechanisms in titanium alloys. His work contributes to a deeper understanding of material performance under hydrogen-rich environments.

Articles (10)

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2024

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2023

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2023

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2023

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2023

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2022

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2022

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2022

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2021

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2021

Collaborators (1)

Kyosuke Hirayama

assistant professor

Kyoto University

JAPAN

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Osamu Takakuwa

Research Interests

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Articles (10)

The contribution of Cr and Ni to hydrogen absorption energy in Fe-Cr-Ni austenitic systems: A first-principles study

Antagonistic fatigue crack acceleration/deceleration phenomena in Ni-based superalloy 718 under hydrogen-supply

Direct observation of three-dimensional short fatigue crack closure behavior in Ti-6Al-4V alloy using ultra-high-resolution X-ray microtomography

Hydrogen-enhanced deformation twinning in Fe-Cr-Ni-based austenitic steel characterized by in-situ EBSD observation

Solid-solution hardening by hydrogen in Fe–Cr–Ni-based austenitic steel: Temperature and strain rate effects

Criteria for hydrogen-assisted crack initiation in Ni-based superalloy 718

Effects of Ni Concentration and Aging Heat Treatment on the Hydrogen Embrittlement Behavior of Precipitation-Hardened High-Mn Austenitic Steel,析出硬化型高 Mnオーステナイト鋼の水素脆化挙動に及ぼすNi 含有量および時効熱処理の影響

Fatigue crack-growth retardation after overloading in gaseous hydrogen: Revisiting the effect of hydrogen on crack-tip plastic-zone development

3D short fatigue crack closure behavior in Ti-6Al-4V alloy investigated using in-situ high resolution synchrotron X-ray tomography

Internal and External Hydrogen-related Loss of Ductility in a Ni-based Superalloy 718 and Its Temperature Dependence,内部・外部水素によるNi 基超合金 718 の延性低下機構とその温度依存性

Collaborators (1)

Kyosuke Hirayama

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