Manufacturing Technology 2024, 24(1):40-46 | DOI: 10.21062/mft.2024.010

Effect of Change in Current Density on Hydrogen Embrittlement of Advanced High-Strength Steel S960MC during Hydrogenation

Petra Drímalová ORCID...1, František Nový ORCID...1, Milan Uhričík ORCID...1, Petra Váňová ORCID...2, Lukáš Šikyňa ORCID...1, Veronika Chvalníková ORCID...1, Martin Slezák ORCID...1
1 Faculty of Mechanical Engineering, Department of Material Engineering, University of Zilina. Univerzitna 8215/1, 010 26 Zilina. Slovak Republic
2 Faculty of Materials and Technologies, Department of Materials Engineering and recycling, VSB Technical University Ostrava. 17. listopadu 2172/15, 708 00 Ostrava-Poruba. Czech Republic

Hydrogen embrittlement involves the interaction between hydrogen and the microstructure of metals, which can lead to an alarming loss of mechanical properties. For advanced high-strength (AHS) steel S960MC grade, which finds application in fields ranging from heavy machinery to construction, understanding this phenomenon is important. The material's complex crystalline lattice, carefully engineered to maximize strength, becomes vulnerable in the presence of hydrogen. The sources of hydrogen that can lead to embrittlement of steel are various. From the exposure of steel to hydrogen during production processes to the absorption of hydrogen from the environment. After the absorption of hydrogen into the material, hydrogen atoms diffuse in the microstructure and look for places with high stress concentration (cracks, inclusions, grain boundaries, etc.). In these regions, atomic hydrogen disrupts interatomic bonds, weakening the material and making it susceptible to embrittlement and subsequent complete failure of the component. This research is focused on how the change in current density affects the hydrogen embrittlement of AHS steel S960MC during hydrogenation. It was found that the mechanical properties of steel decrease at a lower current density, but not to the same extent as at a higher current density. Thus, it can be said that the change in current density influences the hydrogen embrittlement of S960MC steel.

Keywords: Hydrogen Embrittlement, Current Density, Advanced High-Strength Steel, Hydrogenation, S960MC
Grants and funding:

The research was funded by Slovak Research and Development Agency under contract No. APVV-20-0427 and the Slovak Ministry of Education, Science, Research, and Sport's Scientific Grant Agency under contract VEGA No. 1/0741/21

Received: August 30, 2023; Revised: January 5, 2024; Accepted: January 9, 2024; Prepublished online: January 16, 2024; Published: February 23, 2024  Show citation

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Drímalová P, Nový F, Uhričík M, Váňová P, Šikyňa L, Chvalníková V, Slezák M. Effect of Change in Current Density on Hydrogen Embrittlement of Advanced High-Strength Steel S960MC during Hydrogenation. Manufacturing Technology. 2024;24(1):40-46. doi: 10.21062/mft.2024.010.
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