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Fatigue crack initiation and growth in a CrMo steel under hydrogen pressure

Briottet, Laurent and Moro, Isabelle and Escot, Marielle and Furtado, Jader and Bortot, Paolo and Tamponi, Gian Marco and Solin, Jouni and Odemer, Grégory and Blanc, Christine and Andrieu, Eric Fatigue crack initiation and growth in a CrMo steel under hydrogen pressure. (2015) International Journal of Hydrogen Energy, 40 (47). 17021-17030. ISSN 0360-3199

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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2015.05.080


Along the hydrogen supply chain, metallic components, such as pressure vessels, compressors and valves, are facing high pressure hydrogen gas. The object of this paper is to address microstructural as well as mechanical aspects of fatigue crack initiation and growth at room temperature in a quenched and tempered (Q&T) low alloy steel under hydrogen pressure in the range 0.5e35 MPa. For such steel, the need to perform tests in-situ under hydrogen pressure is required. The influence of hydrogen gas on the total life in terms of crack initiation and crack propagation is analyzed. The experimental techniques developed to detect crack initiation in a pressure vessel under hydrogen pressure are presented. Thanks to these technical developments the influence of hydrogen gas on the total life duration including crack initiation and crack propagation is analyzed. It is shown that the effect of hydrogen pressure on crack initiation is important. At constant load ratio, the hydrogen pressure effect on fatigue crack growth (FCG) is dependent on the loading amplitude (in terms of DK). These results related to cracking behavior are enriched with information on fracture surfaces appearance. The results presented have been achieved within the European project MATHRYCE [1] dedicated to Material Testing and Recommendations for Hydrogen Components under fatigue. They are part of a process necessary to give a scientific background to the development of a design methodology where hydrogen enhanced fatigue damage is taken into account.

Item Type:Article
HAL Id:hal-01556646
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Air Liquide (FRANCE)
French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Université Grenoble Alpes - UGA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Centro Sviluppo Materiali - CSM (ITALY)
Other partners > Tenaris (ITALY)
Other partners > VTT Technical Research Centre of Finland Ltd (FINLAND)
Laboratory name:
Deposited On:05 Jul 2017 10:56

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