Hydrogen depth profiles and microhardness of electrochemically hydrogen-charged nanostructured bainitic steels

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dc.contributor.authorKazum, Oen_AU
dc.contributor.authorIonescu, Men_AU
dc.contributor.authorBeladi, Hen_AU
dc.contributor.authorKannan, MBen_AU
dc.date.accessioned2025-12-12T03:12:49Zen_AU
dc.date.available2025-12-12T03:12:49Zen_AU
dc.date.issued2019-05-21en_AU
dc.date.statistics2025-06-04en_AU
dc.description.abstractHydrogen depth profiles and microhardness of the electrochemically hydrogen-charged nanostructured bainitic steels (produced at two different transformation temperatures, i.e. 200 °C (NBS200)and 350 °C (NBS350))were obtained using elastic recoil detection analysis (ERDA)technique and Vickers microhardness testing, respectively, and compared to that of mild steel. The ERDA results showed that the subsurface hydrogen concentration was higher in NBS200, followed by NBS350 and mild steel. However, the microhardness data of the hydrogen-charged steels revealed material softening in NBS200 and NBS350, whereas the mild steel exhibited material hardening effect. The microhardness along the cross-sectional depth of the steels showed that the softening effect in NBS200 was closer to the hydrogen-charged surface compared to that of NBS350. The plausible mechanisms for the softening effect in the NBS200 and NBS350, and hardening effect in mild steel have been discussed in this paper. © 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd.en_AU
dc.identifier.citationKazum, O., Ionescu, M., Beladi, H., & Kannan, M. B. (2019). Hydrogen depth profiles and microhardness of electrochemically hydrogen-charged nanostructured bainitic steels. International Journal of Hydrogen Energy, 44(26), 14064-14069. doi:10.1016/j.ijhydene.2019.03.172en_AU
dc.identifier.issn0360-3199en_AU
dc.identifier.issue26en_AU
dc.identifier.journaltitleInternational Journal of Hydrogen Energyen_AU
dc.identifier.pagination14064-14069en_AU
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2019.03.172en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16784en_AU
dc.identifier.volume44en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectSteelsen_AU
dc.subjectHydrogenen_AU
dc.subjectElectrochemistryen_AU
dc.subjectMicrohardnessen_AU
dc.subjectDislocationsen_AU
dc.subjectTestingen_AU
dc.subjectTemperature rangeen_AU
dc.subjectSteelsen_AU
dc.subjectVickers hardnessen_AU
dc.subjectDataen_AU
dc.subjectCrackingen_AU
dc.titleHydrogen depth profiles and microhardness of electrochemically hydrogen-charged nanostructured bainitic steelsen_AU
dc.typeJournal Articleen_AU
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