Hydrogen-assisted fatigue crack growth: pre-charging vs in-situ testing in gaseous environments

The authors would like to thank the Spanish Ministry of Science, Innovation and Universities for the financial support received to carry out research project RTI2018-096070-B-C31 (H2steelweld). A. Zafra and G. Álvarez thank the Spanish Ministry of Universities for the Margarita Salas Postdocotral Fellowships [reference MU-21-UP2021- 030] funded through the Next Generation EU programme. E. Martínez-Pañeda was additionally supported by an UKRI Future Leaders Fellowship [grant MR/V024124/1]. This work pertains to the French Government programs “Investissements d’Avenir” LABEX INTERACTIFS [reference ANR-11-LABX-0017-01]. Finally, the authors would also like to acknowledge the technical support provided by the Scientific and Technical Service of the University of Oviedo for the use of the SEM JEOLJSM5600 scanning electron microscope.