Hydrogen Embrittlement of a HSLA-100 Steel in Seawater

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著者

    • BANERJEE Kumkum
    • Department of Metallurgical & Materials Engineering, Indian Institute of Technology
    • CHATTERJEE U. K.
    • Department of Metallurgical & Materials Engineering, Indian Institute of Technology

抄録

Hydrogen embrittlement of a copper precipitation strengthened and niobium microalloyed HSLA-100 steel on cathodic changing in synthetic seawater has been studied using slow strain rate technique. The effects of potential applied for hydrogen changing, pre-charging with hydrogen and changes in strain rate have been studied. A loss in ductility in terms of drop in percent elongation and percent reduction in area has been observed, the effect being prominent at potentials beyond –900 mV (SCE), SEM fractography shows an increase in brittle quasi-cleavage features with decreasing potential. A hardening effect on hydrogen charging up to –700mV (SCE), followed by a softening effect, has been observed. Precharging has led to a similar behaviour, but an overall increase in the strength values compared to material without precharging.

収録刊行物

  • ISIJ international

    ISIJ international 39(1), 47-55, 1999-01

    The Iron and Steel Institute of Japan

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