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Compatibility of welded austenitic stainless steel (316L) tube for green hydrogen applications

  • The increase in the energy demand and the need to comply to net zero carbon regulations, as per the Paris 2015 climate agreement by 2050, has necessitated the urgency to consider hydrogen as alternative energy carrier. Moreover, hydrogen interaction with metals tend to cause degradation of the mechanical properties in terms of the ductility of the materials. More concern is on the weldment and repair of tubes or pipelines of hydrogen transportation and storage systems. In this study, the heat inducted weld tubes of the cold drawn and annealed austenitic stainless steel (316L) were investigated by slow strain rate test. To achieve the most realistic component-related testing, hollow tube specimens have been fabricated from 1/2-inch Swagelok pipes filled with internal gaseous hydrogen or inert air for reference. The hydrogen concentration measurement is undertaken before and after the autoclave high-pressure pre-charging of the specimens using carrier gas hot extraction. SEM analysis wasThe increase in the energy demand and the need to comply to net zero carbon regulations, as per the Paris 2015 climate agreement by 2050, has necessitated the urgency to consider hydrogen as alternative energy carrier. Moreover, hydrogen interaction with metals tend to cause degradation of the mechanical properties in terms of the ductility of the materials. More concern is on the weldment and repair of tubes or pipelines of hydrogen transportation and storage systems. In this study, the heat inducted weld tubes of the cold drawn and annealed austenitic stainless steel (316L) were investigated by slow strain rate test. To achieve the most realistic component-related testing, hollow tube specimens have been fabricated from 1/2-inch Swagelok pipes filled with internal gaseous hydrogen or inert air for reference. The hydrogen concentration measurement is undertaken before and after the autoclave high-pressure pre-charging of the specimens using carrier gas hot extraction. SEM analysis was used to carry out fractographic analysis to determine the crack initiation sites, crack size and was compared for the base material and heat affected zone influence in the gaseous hydrogen. The effect of hydrogen on the material compatibility of the welded austenitic stainless steel is assessed and compared to none-welded tubes tested in defined testing parameters that contribute to Hydrogen Assisted Cracking. A better understanding on the impact of weldment on the structural integrity for stainless steel is elucidated for green hydrogen application.zeige mehrzeige weniger

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  • SAM_SHAANIKA_IIW2024_COMMISSION XI_SSRT HYDROGEN EVALUATION.pdf
    eng

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Metadaten
Autor*innen:Sam Shaanika
Koautor*innen:Oded Sobol, Thomas Böllinghaus
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2024
Organisationseinheit der BAM:9 Komponentensicherheit
9 Komponentensicherheit / 9.1 Komponenten für Energieträger
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik
Freie Schlagwörter:Austenitic stainless steel; Burst pressure; Heat Induction; Orbital welding; Slow strain rate
Themenfelder/Aktivitätsfelder der BAM:Energie
Energie / Wasserstoff
Veranstaltung:IIW 77th Annual Assembly 2024
Veranstaltungsort:Rhodes, Greece
Beginndatum der Veranstaltung:07.07.2024
Enddatum der Veranstaltung:12.07.2024
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:25.07.2024
Referierte Publikation:Nein
Eingeladener Vortrag:Nein
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