Effects of hydrogen-charging on the susceptibility of X100 pipeline steel to hydrogen-induced cracking

In this work, the hydrogen-induced cracking (HIC) behavior of X100 pipeline steel was investigated by a combination of tensile test, electrochemical hydrogen permeation measurement and surface characterization techniques. The effect of inclusions in the steel on the crack initiation was analyzed. Re...

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Bibliographic Details
Published in:International journal of hydrogen energy 2009-12, Vol.34 (24), p.9879-9884
Main Authors: Dong, C.F., Liu, Z.Y., Li, X.G., Cheng, Y.F.
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Aluminum oxide
Applied sciences
Charging
Crack initiation
Diffusivity
Energy
Exact sciences and technology
Fracture mechanics
Fuels
High strength low alloy steels
Hydrogen
Hydrogen-charging
Hydrogen-induced cracking
Inclusions
Pipelines
Steels
X100 pipeline steel
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Summary:In this work, the hydrogen-induced cracking (HIC) behavior of X100 pipeline steel was investigated by a combination of tensile test, electrochemical hydrogen permeation measurement and surface characterization techniques. The effect of inclusions in the steel on the crack initiation was analyzed. Results demonstrated that the amount of hydrogen-charging into the X100 steel specimen increases with the charging time and charging current density. Hydrogen-charging will enhance the susceptibility of the steel to HIC. The cracks initiate primarily at inclusions, such as aluminum oxides, titanium oxides and ferric carbides, in the steel. The diffusivity of hydrogen at room temperature in X100 steel is determined to be 1.04 × 10 −8 cm 2/s.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2009.09.090