The paper summarizes the results obtained by authors concerning near-neutral stress corrosion crack- ing (SCC) phenomena on buried pipelines. Stress cor- rosion tests according to different methodologies and fatigue propagation tests were executed on traditional steel grades. Tests were performed also on specimens pre- corroded according to a procedure developed to produce localized attacks similar to those observed during failure analysis on pipelines, acting as preferential sites for crack nucleation. Electrochemical tests were carried out in order to evaluate the influence of environmental parameter on pit formation. The main role of continuous plastic defor- mations on near-neutral SCC is confirmed. The effect of pH, CO2, and bicarbonate concentrations on pitting for- mation is discussed.
(2017). Environmentally assisted cracking of pipeline steels in CO2 containing environment at near-neutral pH [journal article - articolo]. In CORROSION REVIEWS. Retrieved from http://hdl.handle.net/10446/116546
Environmentally assisted cracking of pipeline steels in CO2 containing environment at near-neutral pH
Cabrini, Marina;Lorenzi, Sergio;Pastore, Tommaso;
2017-10-01
Abstract
The paper summarizes the results obtained by authors concerning near-neutral stress corrosion crack- ing (SCC) phenomena on buried pipelines. Stress cor- rosion tests according to different methodologies and fatigue propagation tests were executed on traditional steel grades. Tests were performed also on specimens pre- corroded according to a procedure developed to produce localized attacks similar to those observed during failure analysis on pipelines, acting as preferential sites for crack nucleation. Electrochemical tests were carried out in order to evaluate the influence of environmental parameter on pit formation. The main role of continuous plastic defor- mations on near-neutral SCC is confirmed. The effect of pH, CO2, and bicarbonate concentrations on pitting for- mation is discussed.File | Dimensione del file | Formato | |
---|---|---|---|
CR_Environmentally assisted cracking of pipeline steels.pdf
Solo gestori di archivio
Versione:
publisher's version - versione editoriale
Licenza:
Licenza default Aisberg
Dimensione del file
3.96 MB
Formato
Adobe PDF
|
3.96 MB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
Aisberg ©2008 Servizi bibliotecari, Università degli studi di Bergamo | Terms of use/Condizioni di utilizzo