Mapping localized hydrogen by in-situ neutron imaging
The main aim of this proposal is to investigate whether neutron transmission imaging can be used to detect spatially resolved concentrations of hydrogen (H) in steel under conditions approaching those relevant for advanced engineering applications. The purpose behind the investigation is the industrially highly relevant problem of hydrogen embrittlement (HE) where even minute amounts of H in steel will have a detrimental effect on the mechanical properties. Insights from fracture mechanics tests and subsequent SEM imaging of the fracture surfaces have led to further support for the hypothesis that while the specimen is under load the intense stress state in front of a crack tip promotes preferential diffusion of H into the crack tip region. The local concentration of H in front of the crack tip has never been measured and average values reported from TDS cannot be assumed to properly represent it. The proposed experiment aims to investigate if, and under what conditions, the locally increased H concentration can be detected.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
DAHLBERG Carl; HALILOVIC Armin; David Lindblom; TENGATTINI Alessandro and WORACEK Robin. (2021). Mapping localized hydrogen by in-situ neutron imaging. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-05-105
This data is not yet public
This data is not yet public
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