Effect of CO_2 partial pressure on SCC behavior of welded X80 pipeline in simulated soil solution |
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| Authors: | Ming WU Xu CHEN Chuan HE Jun XIAO College of Petroleum Engineering Liaoning Shihua University Fushun China |
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| Affiliation: | Ming WU,Xu CHEN*,Chuan HE and Jun XIAO College of Petroleum Engineering,Liaoning Shihua University,Fushun 113001,China |
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| Abstract: | The stress corrosion cracking (SCC) behavior of welded X80 pipeline steel in simulated Ku'erle soil solution was studied by means of electrochemical impedance spectroscopy (EIS) and slow strain rate tests (SSRT).The microstructure of the welded steel was observed by optical microscopy (OM).It is demonstrated that the microstructure of the weld metal consists of acicular ferrite and grain boundary ferrite,while that of heat affected zone (HAZ) is a mixture of acicular ferrite and bainitic ferrite microconsti... |
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| Keywords: | X80 steel Weld metal CO2 partial pressure SCC |
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