Effect of hydrogen on brittle-ductile transition of COR-TEN O and its weld material (1st report, brittle-ductile transition of COR-TEN O)

Takao Utsunomiya, Katsuhiko Watanabe

Research output: Contribution to journalArticle

Abstract

Storage tanks and pipelines of gaseous fuel are frequently installed in low temperature environment. So, when gaseous fuel contains hydrogen, not only cryogenic embrittlement but also hydrogen embrittlement may occur in the equipments. In this report, the effect of hydrogen on brittle-ductile transition of COR-TEN O steel was studied by carrying out fracture experiments of hydrogen charged and non-charged materials over the temperature range from - 196°C to room temperature. The variations of fracture resistance expressed by CED with temperature for hydrogen charged and non-charged materials are compared. As the result, it is shown that the brittle-ductile transition temperature of hydrogen charged material is lower than that of non-charged one and, although the fracture resistance of charged material naturally becomes smaller in the upper shelf range, not the fracture resistance of non-charged material but that of charged one is a little bit larger in the brittle-ductile transition range.

Original languageEnglish
Pages (from-to)1395-1401
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume73
Issue number12
Publication statusPublished - 2007 Dec

Fingerprint

Hydrogen
Welds
Fracture toughness
Temperature
Hydrogen fuels
Hydrogen embrittlement
Steel
Embrittlement
Cryogenics
Superconducting transition temperature
Pipelines
Experiments

Keywords

  • Brittle-ductile transition
  • CED (Crack Energy Density)
  • Fracture mechanics
  • Fracture resistance
  • Hydrogen embrittlement

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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title = "Effect of hydrogen on brittle-ductile transition of COR-TEN O and its weld material (1st report, brittle-ductile transition of COR-TEN O)",
abstract = "Storage tanks and pipelines of gaseous fuel are frequently installed in low temperature environment. So, when gaseous fuel contains hydrogen, not only cryogenic embrittlement but also hydrogen embrittlement may occur in the equipments. In this report, the effect of hydrogen on brittle-ductile transition of COR-TEN O steel was studied by carrying out fracture experiments of hydrogen charged and non-charged materials over the temperature range from - 196°C to room temperature. The variations of fracture resistance expressed by CED with temperature for hydrogen charged and non-charged materials are compared. As the result, it is shown that the brittle-ductile transition temperature of hydrogen charged material is lower than that of non-charged one and, although the fracture resistance of charged material naturally becomes smaller in the upper shelf range, not the fracture resistance of non-charged material but that of charged one is a little bit larger in the brittle-ductile transition range.",
keywords = "Brittle-ductile transition, CED (Crack Energy Density), Fracture mechanics, Fracture resistance, Hydrogen embrittlement",
author = "Takao Utsunomiya and Katsuhiko Watanabe",
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month = "12",
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journal = "Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A",
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T1 - Effect of hydrogen on brittle-ductile transition of COR-TEN O and its weld material (1st report, brittle-ductile transition of COR-TEN O)

AU - Utsunomiya, Takao

AU - Watanabe, Katsuhiko

PY - 2007/12

Y1 - 2007/12

N2 - Storage tanks and pipelines of gaseous fuel are frequently installed in low temperature environment. So, when gaseous fuel contains hydrogen, not only cryogenic embrittlement but also hydrogen embrittlement may occur in the equipments. In this report, the effect of hydrogen on brittle-ductile transition of COR-TEN O steel was studied by carrying out fracture experiments of hydrogen charged and non-charged materials over the temperature range from - 196°C to room temperature. The variations of fracture resistance expressed by CED with temperature for hydrogen charged and non-charged materials are compared. As the result, it is shown that the brittle-ductile transition temperature of hydrogen charged material is lower than that of non-charged one and, although the fracture resistance of charged material naturally becomes smaller in the upper shelf range, not the fracture resistance of non-charged material but that of charged one is a little bit larger in the brittle-ductile transition range.

AB - Storage tanks and pipelines of gaseous fuel are frequently installed in low temperature environment. So, when gaseous fuel contains hydrogen, not only cryogenic embrittlement but also hydrogen embrittlement may occur in the equipments. In this report, the effect of hydrogen on brittle-ductile transition of COR-TEN O steel was studied by carrying out fracture experiments of hydrogen charged and non-charged materials over the temperature range from - 196°C to room temperature. The variations of fracture resistance expressed by CED with temperature for hydrogen charged and non-charged materials are compared. As the result, it is shown that the brittle-ductile transition temperature of hydrogen charged material is lower than that of non-charged one and, although the fracture resistance of charged material naturally becomes smaller in the upper shelf range, not the fracture resistance of non-charged material but that of charged one is a little bit larger in the brittle-ductile transition range.

KW - Brittle-ductile transition

KW - CED (Crack Energy Density)

KW - Fracture mechanics

KW - Fracture resistance

KW - Hydrogen embrittlement

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