Fatigue crack growth of two pipeline steels in a pressurized hydrogen environment |
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| Affiliation: | 1. Depart. of Mechanics, Faculty of Mechanics, USTO University, Algeria;2. LPTPM, FT, Hassiba BenBouali University of Chlef, 02000 Chlef, Algeria;3. LaBPS-ENIM, Paul Verlaine University of Metz, Ile de Saulcy 57045, France;4. Mechanical Engineering Research Institute of the Russian Academy of Sciences, 4 M. Kharitonievsky Per., 101990 Moscow, Russia;1. Univ. Grenoble Alpes, F-38000 Grenoble, France;2. CEA, LITEN, DTBH, F-38054 Grenoble, France;3. Air Liquide – Centre de Recherche Paris-Saclay, 1 chemin de la Porte des Loges, BP 126, 78354 Les Loges-en-Josas, Jouy-en-Josas, France;4. TenarisDalmine R&D, Piazza Caduti 6 Luglio 1944, 1, 24044 Dalmine, Italy;5. CSM SPA, Via Di Castel Romano 100, Roma 00128, Italy;6. VTT Technical Research Centre of Finland, Vuorimiehentie 5, Espoo 02044, Finland;7. Université de Toulouse, CIRIMAT, UPS/INPT/CNRS, ENSIACET, 4 allée Emile Monso, BP 44362, 31030 Toulouse Cedex 4, France;1. Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;2. Research Fellow of Japan Society for the Promotion of Science, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;3. Department of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;4. Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;5. International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;6. International Research Center for Hydrogen Energy, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan |
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| Abstract: | Fatigue crack growth tests were conducted on two pipeline steel alloys, API 5L X52 and X100. Baseline tests were conducted in air, and those results were compared with tests conducted in pressurized hydrogen gas. All tests were run at (load ratio) R = 0.5 and a frequency of 1 Hz, except for one test on X100, run at 0.1 Hz. Tests were conducted at hydrogen pressures of 1.7 MPa, 7 MPa, 21 MPa, and 48 MPa. Fatigue crack growth rates for both X100 and X52 were significantly higher in a pressurized hydrogen environment than in air. This enhanced growth rate appears to correlate to pressure for X100 but may not for X52. |
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| Keywords: | A low alloy steel C hydrogen embrittlement C intergranular corrosion |
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