Ex-situ investigation of the compatibility of Duplex Stainless Steel for high-pressure hydrogen applications
- The key to a successful transition into clean energy carriers such as hydrogen requires the construction of safe transportation pipelines made of alloys which are not susceptible to hydrogen assisted cracking. Duplex Stainless Steels (DSS) are considered as a proper class for components because of their many distinctive qualities. As this consideration depends strongly on the susceptibility level to Hydrogen Assisted Cracking (HAC), the DSS class has been broadly investigated under electrochemical charging conditions. In this work, the interplay between several factors controlling the level of HAC, was examined using light microscopy, high-pressure gaseous hydrogen pre-charging, Electron Backscatter Diffraction (EBSD), tensile testing, fractography and hydrogen concentration measurements using Carrier Gas Hot Extraction (CGHE). The effect of gaseous hydrogen on the mechanical properties with the role of hydrogen induced phase transformation have been investigated both in unusedThe key to a successful transition into clean energy carriers such as hydrogen requires the construction of safe transportation pipelines made of alloys which are not susceptible to hydrogen assisted cracking. Duplex Stainless Steels (DSS) are considered as a proper class for components because of their many distinctive qualities. As this consideration depends strongly on the susceptibility level to Hydrogen Assisted Cracking (HAC), the DSS class has been broadly investigated under electrochemical charging conditions. In this work, the interplay between several factors controlling the level of HAC, was examined using light microscopy, high-pressure gaseous hydrogen pre-charging, Electron Backscatter Diffraction (EBSD), tensile testing, fractography and hydrogen concentration measurements using Carrier Gas Hot Extraction (CGHE). The effect of gaseous hydrogen on the mechanical properties with the role of hydrogen induced phase transformation have been investigated both in unused material and in high pressure pipeline section. In contrary to the common electrochemical charging described broadly in the literature, no significant martensitic phase transformation of the austenitic phase was observed. On the other hand, the influence of hydrogen on parameters such as elongation at fracture and reduction of area was noticeable. It is concluded based on the performance of DSS in gaseous hydrogen, that this material has a better potential for utilization in hydrogen applications. As for future experiments, the intention is to analyse the impact of high-pressure gaseous hydrogen on the welded components of this grade, and under mechanical load using the hollow specimen technique.…


| Autor*innen: | Reinhold LeoORCiD, Oded SobolORCiD, Silas Ithete Hango, Romeo Saliwan Neumann, Enis AskarORCiD, Thomas BöllinghausORCiD |
|---|---|
| Dokumenttyp: | Beitrag zu einem Tagungsband |
| Veröffentlichungsform: | Graue Literatur |
| Sprache: | Englisch |
| Titel des übergeordneten Werkes (Englisch): | Proceedings of the 5th International Conference on Metals & Hydrogen |
| Jahr der Erstveröffentlichung: | 2025 |
| Organisationseinheit der BAM: | 2 Prozess- und Anlagensicherheit |
| 2 Prozess- und Anlagensicherheit / 2.1 Sicherheit von Energieträgern | |
| 5 Werkstofftechnik | |
| 5 Werkstofftechnik / 5.1 Mikrostruktur Design und Degradation | |
| 9 Komponentensicherheit | |
| 9 Komponentensicherheit / 9.1 Komponenten für Energieträger | |
| Erste Seite: | 1 |
| Letzte Seite: | 19 |
| DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik |
| Freie Schlagwörter: | Duplex Stainless Steels; High-Pressure Hydrogen; Hollow Specimen Technique; Hydrogen Assisted Cracking; Pipelines |
| Themenfelder/Aktivitätsfelder der BAM: | Energie |
| Energie / Wasserstoff | |
| Veranstaltung: | 5th International Conference on Metals and Hydrogen |
| Veranstaltungsort: | Ghent, Belgium |
| Beginndatum der Veranstaltung: | 14.10.2025 |
| Enddatum der Veranstaltung: | 16.10.2025 |
| ISBN: | 978-9-08179-424-4 |
| Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
| Datum der Freischaltung: | 22.10.2025 |
| Referierte Publikation: | Nein |

