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Journal Article

Hydrogen diffusion and trapping in a cryogenic processed high-Cr ferrous alloy

MPS-Authors
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Jovičević-Klug,  Patricia
Surface Science for Future Materials, Project Groups, Interface Chemistry and Surface Engineering, Max Planck Institute for Sustainable Materials, Max Planck Society;
Corrosion, Interface Chemistry and Surface Engineering, Max Planck Institute for Sustainable Materials, Max Planck Society;

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Prabhakar,  J. Manoj
Corrosion, Interface Chemistry and Surface Engineering, Max Planck Institute for Sustainable Materials, Max Planck Society;

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Kasdorf Giesbrecht,  Cristiano
Corrosion, Interface Chemistry and Surface Engineering, Max Planck Institute for Sustainable Materials, Max Planck Society;

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Schwarz,  Tim
Atom Probe Tomography, Microstructure Physics and Alloy Design, Max Planck Institute for Sustainable Materials, Max Planck Society;

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Rohwerder,  Michael
Corrosion, Interface Chemistry and Surface Engineering, Max Planck Institute for Sustainable Materials, Max Planck Society;

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s41529-024-00522-1.pdf
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Citation

Jovičević-Klug, P., Prabhakar, J. M., Kasdorf Giesbrecht, C., Schwarz, T., Bonnekoh, C., Rieth, M., et al. (2024). Hydrogen diffusion and trapping in a cryogenic processed high-Cr ferrous alloy. npj Materials Degradation, 8(1): 104. doi:10.1038/s41529-024-00522-1.


Cite as: https://hdl.handle.net/21.11116/0000-000F-EE4E-F
Abstract
The effect of hydrogen diffusion and trapping was studied in a high-Cr ferrous alloy using an inverted scanning Kelvin probe and thermal desorption spectroscopy in correlation with microstructure and residual stress study. In addition, different processing of ferritic/martensitic 9Cr1WTaV alloy (EUROFER97) was tested in correlation with observed selected properties to observe induced changes in material degradation and surface. The activation energies for hydrogen traps were shown to have distinct peaks corresponding to different trapping mechanisms, including matrix dislocations and grain boundaries. For the cryogenically treated sample, an additional peak was also identified and correlated with increased carbide precipitation.