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Stress corrosion cracking of X80 pipeline steel in simulated alkaline soil solution

Liang, Ping / Li, Xiaogang / Du, Cuiwei / Chen, Xu

AbstractThe stress corrosion cracking susceptibility of X80 steel under applied cathodic potentials in a simulated soil solution was investigated using slow strain rate tensile tests. The fracture surfaces were observed by scanning electron microscopy. No apparent change of reduction in area was found at −775mV in contrast to the open circuit potential. Many dimples were visible on both fracture surfaces. However, when the applied potentials were lower than −1000mV, the SCC susceptibility increased as a result of evolution hydrogen, which diffuses into the steel. Pitts were found to be an important factor in the initiation of cracks.

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Stress corrosion cracking of X80 pipeline steel in simulated alkaline soil solution

Liang, Ping / Li, Xiaogang / Du, Cuiwei / Chen, Xu

AbstractThe stress corrosion cracking susceptibility of X80 steel under applied cathodic potentials in a simulated soil solution was investigated using slow strain rate tensile tests. The fracture surfaces were observed by scanning electron microscopy. No apparent change of reduction in area was found at −775mV in contrast to the open circuit potential. Many dimples were visible on both fracture surfaces. However, when the applied potentials were lower than −1000mV, the SCC susceptibility increased as a result of evolution hydrogen, which diffuses into the steel. Pitts were found to be an important factor in the initiation of cracks.

Stress corrosion cracking of X80 pipeline steel in simulated alkaline soil solution

Liang, Ping / Li, Xiaogang / Du, Cuiwei / Chen, Xu

AbstractThe stress corrosion cracking susceptibility of X80 steel under applied cathodic potentials in a simulated soil solution was investigated using slow strain rate tensile tests. The fracture surfaces were observed by scanning electron microscopy. No apparent change of reduction in area was found at −775mV in contrast to the open circuit potential. Many dimples were visible on both fracture surfaces. However, when the applied potentials were lower than −1000mV, the SCC susceptibility increased as a result of evolution hydrogen, which diffuses into the steel. Pitts were found to be an important factor in the initiation of cracks.

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Title:

Stress corrosion cracking of X80 pipeline steel in simulated alkaline soil solution

Contributors:

Liang, Ping (author) / Li, Xiaogang (author) / Du, Cuiwei (author) / Chen, Xu (author)

Publication date:

2008-07-05

Size:

6 pages

ISSN:

DOI:

https://doi.org/10.1016/j.matdes.2008.07.012

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Pipeline steel , Brittle fracture , Hydrogen assisted cracking , Stress corrosion cracking

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