Abstract
Stress Corrosion Cracking Mechanism: Stress corrosion cracking (SCC) has been observed on the soil side of buried, natural gas pipelines since the early 1960s. Transgranular SCC has caused service as well as hydrotest failures, and cracks have been found associated with gouges and dents. Transgranular cracking occurs in environments with pH about 6.5, and is referred to as nearneutral pH cracking, as opposed to high pH cracking, which is intergranular in nature.
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References
National Energy Board, Calgary, Alberta, Stress Corrosion Cracking on Canadian Oil and Gas Pipelines, Report No. MH-2-95, 1996.
Parkins, R.N., et al., Corrosion, 50, 394–408, 1994.
Elboujdaini, M. et al, Corrosion/2000, Paper 00379, NACE, Houston, TX, 2000.
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Elboujdaini, M. (2006). Initiation of Environmentally Assisted Cracking in Line Pipe Steel. In: Gdoutos, E.E. (eds) Fracture of Nano and Engineering Materials and Structures. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4972-2_499
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DOI: https://doi.org/10.1007/1-4020-4972-2_499
Publisher Name: Springer, Dordrecht
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