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Effect of Applied Potentials on Stress Corrosion Cracking Susceptibility of X80 Pipeline Steel in Simulated Soil Solution

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Abstract:

The stress corrosion cracking susceptibility of X80 pipeline steel was investigated in a simulated soil solution using slow strain rate tensile (SSRT) tests. The different potentials were applied in the tests. The fracture surfaces were observed using scanning electron microscopy (SEM). The X80 steel was susceptible to SCC in simulated solution. The SCC susceptibility had no apparent change with the anodic potentials applied. The fracture mechanism was anodic dissolution. However, the SCC susceptibility increased with the decrease of the cathodic potentials obviously. The cracking was induced by the Hydrogen diffusing into the metal.

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Periodical:

Advanced Materials Research (Volumes 146-147)

Pages:

920-925

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.146-147.920

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Online since:

October 2010

Authors:

Yuan Cheng, Hong Ying Yu, Li Xin Zhang, Ying Wang, Xu Meng, Dong Bai Sun

Keywords:

Pipeline Steel, SCC Susceptibility, Slow Strain Rate Tensile, Stress Corrosion Cracking (SCC)

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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