dc.contributor.author | Sezgin, Jean-Gabriel | |
dc.contributor.author | Fjær, Hallvard Gustav | |
dc.contributor.author | Matsunaga, Hisao | |
dc.contributor.author | Yamabe, Junichiro | |
dc.contributor.author | Olden, Vigdis | |
dc.date.accessioned | 2020-12-11T12:49:52Z | |
dc.date.available | 2020-12-11T12:49:52Z | |
dc.date.created | 2018-10-04T12:04:52Z | |
dc.date.issued | 2018 | |
dc.identifier.isbn | 978-1-880653-87-6 | |
dc.identifier.uri | https://hdl.handle.net/11250/2717176 | |
dc.description.abstract | Diffusion measurements and thermal desorption measurements have been performed on a X70 pipeline steel, in as received and normalized and quenched condition, after being hydrogen charged for 200 h at 100 MPa hydrogen gas pressure and 85°C. Numerical simulations based on the assumption of thermodynamic equilibrium were performed, aiming to compare the trapping energies when fitting to the TDS spectra. TDS experiments revealed a reversible trap site with activation energy of 26.2 kJ.mol−1. Irreversible trap sites with an activation energy of >100 kJ.mol−1 were observed from both as-received and heat-treated condition. In contrast, a reversible trap site with an activation energy of 49.2 kJ.mol−1 was observed only from the heat-treated condition. The numerical modelling based on the assumption of equilibrium between hydrogen in traps and hydrogen in lattice is seen to provide a good fit to the experimental data. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | International Society of Offshore & Polar Engineers | en_US |
dc.relation.ispartof | The Proceedings of The Twenty-eighth (2018) International OCEAN AND POLAR ENGINEERING CONFERENCE, ISOPE 2018 | |
dc.subject | pipeline | en_US |
dc.subject | hydrogen | en_US |
dc.subject | trapping | en_US |
dc.subject | Steel | en_US |
dc.subject | weld | en_US |
dc.subject | embrittlement | en_US |
dc.subject | desorption | en_US |
dc.title | Hydrogen trapping in X70 structural pipeline steel and weldments | en_US |
dc.title.alternative | Hydrogen trapping in X70 structural pipeline steel and weldments | en_US |
dc.type | Chapter | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | Copyright © 2018 by the International Society of Offshore and Polar Engineers (ISOPE) | en_US |
dc.source.pagenumber | 228-235 | en_US |
dc.identifier.cristin | 1617852 | |
cristin.unitcode | 7401,0,0,0 | |
cristin.unitname | Stiftelsen SINTEF | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |