Rodyti trumpą aprašą

dc.contributor.authorKumšlytis, Vigantas
dc.contributor.authorSkindaras, Raimondas
dc.contributor.authorValiulis, Algirdas Vaclovas
dc.date.accessioned2023-09-18T19:08:28Z
dc.date.available2023-09-18T19:08:28Z
dc.date.issued2012
dc.identifier.issn1392-1320
dc.identifier.other(BIS)VGT02-000024682
dc.identifier.urihttps://etalpykla.vilniustech.lt/handle/123456789/135924
dc.description.abstractThe article deals with the ageing and heat treatment influence on operational reliability of 5 % Cr-0.5 % Mo steel welded joints and pipeline elements. Separate components of the pipelines in the refineries are manufactured from chromemolybdenum 5 % Cr-0.5 % Mo alloy steel. Reduction of internal stresses in chrome-molybdenum steel welded joints can be provided only by thermal treatment. Other methods of stress relieving are not acceptable for these steels. Presented materials analyses the impact of heat treatment on the microstructure and operational reliability of this steel. The objects of research are heat-treated welded joints of piping elements operated at high temperature for an extensive period of time, where degradation of mechanical properties has been observed. When value of the heat treatment temperature or time are exceeded, the structure degradation process is taking place, carbides coagulate within the boundaries of ferrite grains, they form coarse carbide colonies combined into long chains. Mechanical properties – tensile strength and impact strength decrease. Detailed analysis of these objects and the interpretation of the received results allow to select the most appropriate heat treatment parameters for the investigated steel structures.eng
dc.formatPDF
dc.format.extentp. 119-122
dc.format.mediumtekstas / txt
dc.language.isoeng
dc.relation.isreferencedbyScience Citation Index Expanded (Web of Science)
dc.relation.isreferencedbyINSPEC
dc.relation.isreferencedbyVINITI
dc.source.urihttp://www.matsc.ktu.lt/index.php/MatSc/article/view/1911/1541
dc.titleThe structure and properties of 5 % Cr-0.5 % Mo steel welded joints after natural ageing and post-weld heat treatment
dc.typeStraipsnis Web of Science DB / Article in Web of Science DB
dcterms.references9
dc.type.pubtypeS1 - Straipsnis Web of Science DB / Web of Science DB article
dc.contributor.institutionAB "ORLEN Lietuva"
dc.contributor.institutionVilniaus Gedimino technikos universitetas
dc.contributor.facultyMechanikos fakultetas / Faculty of Mechanics
dc.subject.researchfieldT 008 - Medžiagų inžinerija / Material engineering
dc.subject.researchfieldT 009 - Mechanikos inžinerija / Mechanical enginering
dc.subject.enChrome-molybdenum steel
dc.subject.enWelding joints
dc.subject.enPost-weld heat treatment
dc.subject.enMicrostructure
dcterms.sourcetitleMaterials science = Medžiagotyra
dc.description.issueno. 2
dc.description.volumeVol. 18
dc.publisher.nameTechnologija
dc.publisher.cityKaunas
dc.identifier.doi10.5755/j01.ms.18.2.1911
dc.identifier.elaba3983962


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