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Crack resistance of supermartensitic steel pipeline welds in offshore industry

  • The increasing application of supermartensitic steels for welded pipelines is an economical alternative to the hitherto used higher-alloyed materials in the North Sea oil and gas indus-try. Failure in such constructions must at any rate be excluded for economical and ecologi-cal reasons. The application of these steels for the transport of corrosive mixtures may, however, involve hydrogen pickup with subsequent hydrogen-assisted stress corrosion cracking. It is therefore necessary not only to assure the weldability, but particularly to have best possible knowledge of the service behaviour and of the failure risk. In order to ensure the transferability of test results to real joined components, innovative test methods are in-creasingly required to be incorporated into a closed test sequence. It will be demonstrated how it is possible to gain significant advantages from the direct comparison between ex-perimentally determined results from component weld tests on the one hand andThe increasing application of supermartensitic steels for welded pipelines is an economical alternative to the hitherto used higher-alloyed materials in the North Sea oil and gas indus-try. Failure in such constructions must at any rate be excluded for economical and ecologi-cal reasons. The application of these steels for the transport of corrosive mixtures may, however, involve hydrogen pickup with subsequent hydrogen-assisted stress corrosion cracking. It is therefore necessary not only to assure the weldability, but particularly to have best possible knowledge of the service behaviour and of the failure risk. In order to ensure the transferability of test results to real joined components, innovative test methods are in-creasingly required to be incorporated into a closed test sequence. It will be demonstrated how it is possible to gain significant advantages from the direct comparison between ex-perimentally determined results from component weld tests on the one hand and material-specific data from small-scale tests on the other hand and numerical simulations. These data that have now been made available are of major importance for industrial applications and are considered to provide a sound basis for realistic lifetime assessments.zeige mehrzeige weniger

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  • Crack resistance of supermartensitic steel pipeline welds in offshore industry.pdf
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  • IIW_2006 - Cover.pdf
    eng

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Metadaten
Autor*innen:Thomas KannengießerORCiD
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Conference Welding and Related Inspection Technologies, IIW
Jahr der Erstveröffentlichung:2006
Verlag:Beta Products cc
Verlagsort:Lyttelton, South Africa
Erste Seite:1
Letzte Seite:14
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Freie Schlagwörter:Closed test sequence; Component tests; Hydrogen diffusion; Hydrogen pickup; Numerical simulation; Permeation experiments; Supermartensitics
Veranstaltung:Conference Welding and Related Inspection Technologies, IIW
Veranstaltungsort:Stellenbosch, South Africa
Beginndatum der Veranstaltung:08.03.2006
Enddatum der Veranstaltung:10.03.2006
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:10.01.2017
Referierte Publikation:Nein
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