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Erscheinungsjahr
- 2012 (3) (entfernen)
Referierte Publikation
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Schlagworte
- Diffusion (1)
- Hydrogen (1)
- Neutron radiography (1)
- Steel (1)
Eingeladener Vortrag
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Revealing hydrogen embrittlement mechanisms in steels is of great interest to scientists and engineers. Neutron radiography makes it possible to measure in-situ hydrogen diffusion with high spatial and temporal resolution at concentrations as low as 20 ppm. We compare hydrogen-charged specimens with hydrogen-free reference specimens and use calibration standards to normalize the hydrogen concentrations. This allows quantitative tracking of the hydrogen concentration evolution as a function of time, space and temperature. Furthermore, a view into the material with 'neutron eyes' facilitates the detection of cavities that contain molecular hydrogen.