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dc.contributor.authorStrnadel, Bohumír
dc.date.accessioned2007-08-14T10:49:10Z
dc.date.available2007-08-14T10:49:10Z
dc.date.issued1998
dc.identifier.citationEngineering Fracture Mechanics. 1998, vol. 61, issues 3-4, p. 299-310.en
dc.identifier.issn0013-7944
dc.identifier.urihttp://hdl.handle.net/10084/61820
dc.language.isoenen
dc.publisherElsevieren
dc.relation.ispartofseriesEngineering Fracture Mechanicsen
dc.relation.urihttps://doi.org/10.1016/S0013-7944(98)00073-3en
dc.subjecthydrogen embrittlementen
dc.subjectpressure vessel steelen
dc.subjectmicrocracksen
dc.subjectstress intensity factoren
dc.subjectfisheyesen
dc.titleFailure of steels caused by hydrogen induced microcrackingen
dc.typearticleen
dc.identifier.locationNení ve fondu ÚKen
dc.description.abstract-enA model of hydrogen induced microcracking in pressure vessel steels has been developed. It is assumed that the initiation of microcracks is caused by a localized increase in hydrogen concentration at inclusions. The propagation at these site initiated microcracks results in fisheye formation and is controlled by a local stress intensity factor and fracture resistance of the matrix. Stability of the hydrogen induced brittle microcrack is dictated by the relative increase of both these quantities. This criterion has been used for the estimation of fisheye crack size at the fracture surface as a function of temperature. The introduced dimensionless coefficient of fracture resistance increase rate grows as the temperature increases. Very good agreement of predicted fisheye crack size with experimental fractographic observations has been found.en
dc.identifier.doi10.1016/S0013-7944(98)00073-3
dc.identifier.wos000077871300001


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