Peculiar temperature dependence of hydrogen-enhanced fatigue crack growth of low-carbon steel in gaseous hydrogen

Saburo Matsuoka; Osamu Takakuwa; Saburo Okazaki; Michio Yoshikawa; Junichiro Yamabe; Hisao Matsunaga

doi:10.1016/j.scriptamat.2018.05.035

Peculiar temperature dependence of hydrogen-enhanced fatigue crack growth of low-carbon steel in gaseous hydrogen

Saburo Matsuoka, Osamu Takakuwa, Saburo Okazaki, Michio Yoshikawa, Junichiro Yamabe, Hisao Matsunaga

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The peculiar temperature dependence of hydrogen-enhanced fatigue crack growth (HEFCG) of low-carbon steel in hydrogen gas was successfully interpreted in terms of ‘trap-site occupancy’ of hydrogen. HEFCG decreased with increasing temperature in hydrogen gas at 0.7 MPa and 298 to 423 K due to lower occupancy of trap sites at higher temperatures. In hydrogen gas at 90 MPa, HEFCG was insensitive to the temperature because most of the trap sites were occupied by hydrogen, regardless of the temperature. Trap sites with a binding energy of 47 kJ/mol, corresponding approximately to the dislocation core, dominated the temperature dependence of HEFCG.

Original language	English
Pages (from-to)	101-105
Number of pages	5
Journal	Scripta Materialia
Volume	154
DOIs	https://doi.org/10.1016/j.scriptamat.2018.05.035
Publication status	Published - Sept 2018

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2018.05.035

Cite this

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title = "Peculiar temperature dependence of hydrogen-enhanced fatigue crack growth of low-carbon steel in gaseous hydrogen",

abstract = "The peculiar temperature dependence of hydrogen-enhanced fatigue crack growth (HEFCG) of low-carbon steel in hydrogen gas was successfully interpreted in terms of {\textquoteleft}trap-site occupancy{\textquoteright} of hydrogen. HEFCG decreased with increasing temperature in hydrogen gas at 0.7 MPa and 298 to 423 K due to lower occupancy of trap sites at higher temperatures. In hydrogen gas at 90 MPa, HEFCG was insensitive to the temperature because most of the trap sites were occupied by hydrogen, regardless of the temperature. Trap sites with a binding energy of 47 kJ/mol, corresponding approximately to the dislocation core, dominated the temperature dependence of HEFCG.",

author = "Saburo Matsuoka and Osamu Takakuwa and Saburo Okazaki and Michio Yoshikawa and Junichiro Yamabe and Hisao Matsunaga",

note = "Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization ( NEDO ), Hydrogen Utilization Technology (2013–2018). Publisher Copyright: {\textcopyright} 2018 Acta Materialia Inc.",

year = "2018",

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doi = "10.1016/j.scriptamat.2018.05.035",

language = "English",

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journal = "Scripta Materialia",

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T1 - Peculiar temperature dependence of hydrogen-enhanced fatigue crack growth of low-carbon steel in gaseous hydrogen

AU - Matsuoka, Saburo

AU - Takakuwa, Osamu

AU - Okazaki, Saburo

AU - Yoshikawa, Michio

AU - Yamabe, Junichiro

AU - Matsunaga, Hisao

N1 - Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization ( NEDO ), Hydrogen Utilization Technology (2013–2018). Publisher Copyright: © 2018 Acta Materialia Inc.

PY - 2018/9

Y1 - 2018/9

N2 - The peculiar temperature dependence of hydrogen-enhanced fatigue crack growth (HEFCG) of low-carbon steel in hydrogen gas was successfully interpreted in terms of ‘trap-site occupancy’ of hydrogen. HEFCG decreased with increasing temperature in hydrogen gas at 0.7 MPa and 298 to 423 K due to lower occupancy of trap sites at higher temperatures. In hydrogen gas at 90 MPa, HEFCG was insensitive to the temperature because most of the trap sites were occupied by hydrogen, regardless of the temperature. Trap sites with a binding energy of 47 kJ/mol, corresponding approximately to the dislocation core, dominated the temperature dependence of HEFCG.

AB - The peculiar temperature dependence of hydrogen-enhanced fatigue crack growth (HEFCG) of low-carbon steel in hydrogen gas was successfully interpreted in terms of ‘trap-site occupancy’ of hydrogen. HEFCG decreased with increasing temperature in hydrogen gas at 0.7 MPa and 298 to 423 K due to lower occupancy of trap sites at higher temperatures. In hydrogen gas at 90 MPa, HEFCG was insensitive to the temperature because most of the trap sites were occupied by hydrogen, regardless of the temperature. Trap sites with a binding energy of 47 kJ/mol, corresponding approximately to the dislocation core, dominated the temperature dependence of HEFCG.

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DO - 10.1016/j.scriptamat.2018.05.035

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JO - Scripta Materialia

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Peculiar temperature dependence of hydrogen-enhanced fatigue crack growth of low-carbon steel in gaseous hydrogen

Abstract

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