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A study of the effect of load on the depth of sulphide stress corrosion of steel used in petroleum pipelines

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dc.contributor.author Rathnayaka, RMMB
dc.contributor.author Madushan, HEMD
dc.contributor.author De Silva, GIP
dc.contributor.editor Abeygunawardane, AAGA
dc.date.accessioned 2022-03-14T04:49:51Z
dc.date.available 2022-03-14T04:49:51Z
dc.date.issued 2020-02
dc.identifier.citation Rathnayaka, R.M.M.B., Madushan, H.E.M.D., De Silva, G.I.P. (2020). A study of the effect of load on the depth of sulphide stress corrosion of steel used in petroleum pipelines [Abstract]. In A.A.G.A. Abeygunawardane (Ed.), Towards smart society through innovative materials (p. 14). Department of Materials Science and Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/17328
dc.description.abstract The phenomenon of sulfide stress corrosion (SSC) can result in catastrophic failures in pressurized equipment and piping leading to extensive damages, injuries and possible fatalities. Sulfide stress corrosion, a major degradation process in metals, is commonly associated with the petroleum industry where a high concentration of H2S is involved. This research focuses on developing a relation between depth of SSC and applied load under a constant H2S concentration for a given time period. Furthermore, the mechanism of the propagation of sulfide stress corrosion is studied via microstructural analysis. According to the NACE standard solution "B" at the room temperature, the corrosion behavior of pipeline steel was evaluated. A special apparatus according to the NACE standards was fabricated for the testing process. The prepared samples of pipeline steel API 5L Grade B was tested under set of pre-determined loads while maintaining constant H2S concentration and pH value of 3.0 ± 0.5 for a constant time period. Thereafter, SEM microscopy and EDAX analysis were performed on the cross sections of corroded specimens. Relations of depth of corrosion versus applied load, and load at fracture versus applied load have been developed. Also, an interpretation is given for the propagation mechanism of SCC in terms of microstructural analysis. The ultimate objective of this work is to develop a model to predict the depth of corrosion occurred under different H2S concentrations, loads/pressure and exposure time periods. en_US
dc.language.iso en en_US
dc.publisher Department of Materials Science and Engineering en_US
dc.subject Sulphide stress corrosion en_US
dc.subject API 5L steel en_US
dc.subject Depth of corrosion en_US
dc.subject Load at fracture en_US
dc.title A study of the effect of load on the depth of sulphide stress corrosion of steel used in petroleum pipelines en_US
dc.type Conference-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Materials Science and Engineering en_US
dc.identifier.year 2020 en_US
dc.identifier.conference Materials Engineering Symposium on Innovations for Industry 2020 en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos p. 14 en_US
dc.identifier.proceeding Towards smart society through innovative materials en_US
dc.identifier.email maheshrathnayaka300@gmail.com en_US


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