Název:
Development of Creep Damage in Similar Weld Joints of P92 Steel Pipe
Autoři:
Král, Petr ; Sklenička, Václav ; Kuchařová, Květa ; Svobodová, M. ; Kvapilová, Marie ; Dvořák, Jiří Typ dokumentu: Příspěvky z konference Konference/Akce: CCMPPS 2017 - Conference on Contribution of Metallography to Production Problem Solutions /14./, Mariánske Lázně (CZ), 20170606
Rok:
2017
Jazyk:
eng
Abstrakt: The microstructure and creep behaviour of the welded joints of P92 steel pipe were\ninvestigated in order to determine the influence of orbital heat welding technology on the creep\nresistance. Creep specimens were machined from the welded joints. Tensile creep tests of welded\njoints were performed at 873 K using different stresses. The microstructure of tested specimens was\ninvestigated by scanning electron microscope Tescan equipped with an electron-back scatter\ndiffraction. The creep results showed that the creep fracture strain of the welded joints decreases\nwith decreasing value of applied stress. Microstructure investigation showed that fracture behaviour\nof welded joints is influenced by an enhanced cavity formation at grain boundaries in the heataffected\nzone causing lower fracture ductility.
Klíčová slova:
creep damage; creep fracture; microstructure; P92 steel; welding Číslo projektu: GA16-09518S (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Contribution of Metallography to Production Problem Solutions II, ISBN 978-3-0357-1241-4, ISSN 1662-9779
Instituce: Ústav fyziky materiálů AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0279305