Studies of Circumferential Stress Corrosion Cracking of Pipelines

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atmire.migration.oldid4721
dc.contributor.advisorCheng, Frank
dc.contributor.authorYang, Yao
dc.contributor.committeememberXue, Deyi
dc.contributor.committeememberEgberts, Philip
dc.contributor.committeememberEl-Badry, Mamdouh
dc.date.accessioned2016-08-10T16:25:07Z
dc.date.available2016-08-10T16:25:07Z
dc.date.issued2016
dc.date.submitted2016en
dc.description.abstractThe circumferential stress corrosion cracking (C-SCC) of X46 and X65 steels in a near-neutral pH environment was studied in this work. The steels were found to be susceptible to SCC. The corrosion and cracking behavior of the steels were investigated. The anodic dissolution at the crack tip was enhanced by stress, contributing to the crack propagation. The increase of corrosion rate was associated with the porous corrosion product. The mechanism of SCC was found to be stress dependent. The SCC process was anodic dissolution dominant under a low stress, while the process was mechanical fracture dominant under a sufficiently high stress. The different SCC behaviors between the steels were studied. Compared with X65 steel, X46 steel contained pearlite and has larger grain size, resulting in better adhesion of corrosion product on the steel and lower mechanical strength. Therefore, X46 steel is more susceptible to mechanical fracture, instead of corrosion.en_US
dc.identifier.citationYang, Y. (2016). Studies of Circumferential Stress Corrosion Cracking of Pipelines (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27912en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/27912
dc.identifier.urihttp://hdl.handle.net/11023/3175
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectMaterials Science
dc.subjectEngineering--Mechanical
dc.subject.classificationcircumferential stress corrosion crackingen_US
dc.subject.classificationpipelinesen_US
dc.subject.classificationstress enhanced corrosionen_US
dc.subject.classificationcrack propagation rateen_US
dc.titleStudies of Circumferential Stress Corrosion Cracking of Pipelines
dc.typemaster thesis
thesis.degree.disciplineMechanical and Manufacturing Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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