Fracture Characterization of Base Metal, Seam Weld, and Girth Weld of Welded Line Pipe Steel at Room and Low Temperatures

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dc.authoridCHOUPANI, NAGHDALI/0000-0001-7872-6408
dc.contributor.authorChoupani, N.
dc.contributor.authorAsghari, V.
dc.contributor.authorKurtaran, H.
dc.date.accessioned2025-01-06T17:37:32Z
dc.date.available2025-01-06T17:37:32Z
dc.date.issued2021
dc.description.abstractFor fitness-for-service assessment of pipeline cracks, it is necessary to examine toughness values of pipeline steels and their variations with temperature. In this study, experimental values of toughness (K-JC) at room temperature have been obtained for base metal (BM), seam weld (SW), and girth weld (GW) in an API X65 gas transportation pipeline in order to investigate the structural integrity of whole structure. The toughness tests employed side-grooved compact tension specimens, obtained from the original pipe, to characterize the resistance to crack extension curves based on the unloading compliance technique. The values of J(IC) for tested specimens were found, and then, K-JC values are obtained using ASTM E1820 guideline as 302, 262, and 166 MPam(1/2) for BM, SW, and GW materials, respectively. Charpy V-notch (CVN) impact tests at room and low temperatures were also conducted to determine low-temperature effects on the toughness, and to examine ductile-brittle transition temperature values in the samples under study. The capability of CVN test for prediction of toughness in the tested specimens was also investigated. The error values in using CVN test results are large enough to justify that the CVN test is not suitable for prediction of toughness accurately.
dc.identifier.doi10.1007/s11665-020-05431-3
dc.identifier.endpage1053
dc.identifier.issn1059-9495
dc.identifier.issn1544-1024
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85099195964
dc.identifier.scopusqualityQ2
dc.identifier.startpage1046
dc.identifier.urihttps://doi.org/10.1007/s11665-020-05431-3
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2270
dc.identifier.volume30
dc.identifier.wosWOS:000607268100004
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Materials Engineering and Performance
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectductile-brittle transition temperature (DBTT)
dc.subjectgirth weld (GW)
dc.subjectseam weld (SW)
dc.subjecttoughness
dc.subjectunloading compliance (UC)
dc.titleFracture Characterization of Base Metal, Seam Weld, and Girth Weld of Welded Line Pipe Steel at Room and Low Temperatures
dc.typeArticle

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