@misc{pogrielz_peculiarity_of_2024, 
author={Pogrielz, T.,Eichinger, M.,Weiser, A.,Todt, J.,Hohenwarter, A.,Ascii, A.,Sarac, B.,Brandl, D.,Ressel, G.,Jary, M.,Dlouhy, A.,Mori, G.,Keckes, J.},
title={Peculiarity of hydrogen absorption in duplex steels: Phase-selective lattice swelling and stress evolution},
year={2024},
howpublished = {journal article},
doi = {https://doi.org/10.1016/j.scriptamat.2024.116142},
abstract = {Electrochemical hydrogen absorption in duplex steels is not fully understood. In this work, an in-situ synchrotron cross-sectional X-ray micro-diffraction analysis is performed on steel with comparable phase fractions of ferrite and austenite, coupled with electrolytic hydrogen charging. The results reveal that charging with a constant current density of 10 mA/cm² for 5 h leads to expanding the austenitic lattice to a depth of approximately 250 µm, up to ≥0.15 %. In contrast, the lattice parameter of the ferrite phase remains unchanged during this process. As the austenite expansion progresses, it generates different amounts of equivalent in-plane compressive stresses, which amount to approximately -150 and -450 MPa in the austenite and ferrite phases at the sample surface, respectively. Using a finite element model of grain interaction, this difference is qualitatively interpreted by mutual mechanical constraints between ferrite and austenite, as well as between the hydrogen-charged surface layer and the underlying material.},
note = {Online available at: \url{https://doi.org/10.1016/j.scriptamat.2024.116142} (DOI). Pogrielz, T.; Eichinger, M.; Weiser, A.; Todt, J.; Hohenwarter, A.; Ascii, A.; Sarac, B.; Brandl, D.; Ressel, G.; Jary, M.; Dlouhy, A.; Mori, G.; Keckes, J.: Peculiarity of hydrogen absorption in duplex steels: Phase-selective lattice swelling and stress evolution. Scripta Materialia. 2024. vol. 248, 116142. DOI: 10.1016/j.scriptamat.2024.116142}}