Stress Corrosion Cracking of Pipeline Steel in Soil Environments of Eastern China

Guang Fu Li; Chun Bo Huang; Hao Guo; Wu Yang

doi:10.4028/www.scientific.net/KEM.353-358.223

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 353-358Stress Corrosion Cracking of Pipeline Steel in...

Stress Corrosion Cracking of Pipeline Steel in Soil Environments of Eastern China

Abstract:

Stress corrosion cracking (SCC) behaviors of pipeline steel X70 in various near-neutral pH soil environments with characteristics of eastern China have been studied through electrochemical measurements and slow strain rate tests (SSRT) at various electrode potentials in four solutions containing different typical soils in eastern China as well as in NS-4 solution. The SCC susceptibility in the four soil solutions was generally higher than that in NS-4 solution. There was a general trend that SCC susceptibility increased with decreasing the potential, suggesting that hydrogen induced cracking probably plays a key role in the cracking at least at low potentials and the parameters of cathodic protection in engineering should be carefully optimized to avoid SCC.

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Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

223-226

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.223

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Online since:

September 2007

Authors:

Guang Fu Li, Chun Bo Huang, Hao Guo, Wu Yang

Keywords:

Electrode Potential, Pipeline Steel, Soil Types, Stress Corrosion Cracking (SCC)

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