Hydrogen transport by dislocation movement in austenitic steel

Hydrogen movement within an austenitic stainless steel has been investigated by microprint technique. Hydrogen atoms show strong preferential segregation along slip bands for the hydrogen-charged then compressed specimens. Such segregation was not observed in other test conditions. This result gives...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2019-07, Vol.761, p.138059, Article 138059
Main Authors: Pu, S.D., Ooi, S.W.
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Dislocation movement
Edge dislocations
Hydrogen
Hydrogen atoms
Hydrogen diffusion
Hydrogen embrittlement
Hydrogen storage
Microprint technique
Plastic deformation
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Summary:Hydrogen movement within an austenitic stainless steel has been investigated by microprint technique. Hydrogen atoms show strong preferential segregation along slip bands for the hydrogen-charged then compressed specimens. Such segregation was not observed in other test conditions. This result gives strong support to the theory that dislocations act as hydrogen traps and trapped hydrogen atoms move with them during plastic deformation.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2019.138059