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Crack growth model for pipeline steels exposed to near‐neutral pH groundwater
Author(s) -
Lu B. T.
Publication year - 2013
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.12033
Subject(s) - hydrogen embrittlement , paris' law , materials science , corrosion fatigue , pipeline (software) , corrosion , growth model , crack closure , embrittlement , metallurgy , stress intensity factor , mechanics , stress (linguistics) , structural engineering , composite material , fracture mechanics , engineering , mathematics , mechanical engineering , physics , linguistics , philosophy , mathematical economics
This paper postulates a crack growth model for pipeline steels in near‐neutral pH soil environments, on the basis of the experimental results reported in literature and the fundamental understanding of the corrosion fatigue crack growth dominated by hydrogen embrittlement mechanism. The comparison with the laboratory data indicates that this model can provide reasonable predictions for the dependence of the crack growth rates on the stress intensity factor, stress ratio, loading frequency, solution pH and electrochemical potential.