Relationship between fatigue crack growth behaviour and local hydrogen concentration near crack tip in pipeline steel
Source abstract
Abstract
Abstract The work is dedicated to evaluation of fatigue crack growth rate in pipeline steel under hydrogenating conditions with taking into account of local hydrogen concentration near the crack tip. The measurement of local hydrogen concentration C H in metal was made by special technique of mass-spectroscopy with laser microprobe. It has been found that fatigue crack growth rate da / dN is the function of some critical combination of following parameters: local hydrogen concentration at the crack tip C H(t) , hydrogen concentration in bulk of metal C H(v) and range of stress intensity factor Δ K . The application of derived formula for fracture risk assessment of defected pipeline is shown.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Material Properties and Failure Mechanisms · Fatigue and fracture mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
Show source-provided references
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