The influence of microstructure on the fatigue crack growth rate in marine steels in the Paris Region

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dc.contributor.authorIgwemezie, Victor C.
dc.contributor.authorMehmanparast, Ali
dc.contributor.authorBrennan, Feargal
dc.date.accessioned2020-08-18T14:29:12Z
dc.date.available2020-08-18T14:29:12Z
dc.date.issued2020-07-28
dc.description.abstractThis paper presents a study on the effect of microstructure on the fatigue crack growth (FCG) rate in advanced S355 marine steels in the Paris Region of the da/dN versus ΔK log–log plot. The environments of study were air and seawater (SW), under constant amplitude sinewave fatigue loading. Fundamentally, three phenomena (crack tip diversion, crack front bifurcation and metal crumb formation) were observed to influence the rate of FCG. These phenomena appear to be a function of the material microstructure, environment and crack tip loading conditions. The three factors retarded the crack growth by reducing or redistributing the effective driving force at the main active crack tip. A crack path containing extensively the three phenomena was observed to offer strong resistance to FCG. In SW, the degree of the electrochemical dissolution of the microplastic zone appears to be an additional primary factor influencing FCG in the steelsen_UK
dc.identifier.citationIgwemezie V, Mehmanparast A, Brennan F. (2020) The influence of microstructure on the fatigue crack growth rate in marine steels in the Paris Region. Fatigue and Fracture of Engineering Materials and Structures, Volume 43, Issue 10, October 2020, pp. 2416-2440en_UK
dc.identifier.issn8756-758X
dc.identifier.urihttps://doi.org/10.1111/ffe.13312
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15702
dc.language.isoenen_UK
dc.publisherWileyen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectS355 steelen_UK
dc.subjectParis Regionen_UK
dc.subjectmicrostructureen_UK
dc.subjectcrack tip bluntingen_UK
dc.subjectcorrosion fatigueen_UK
dc.titleThe influence of microstructure on the fatigue crack growth rate in marine steels in the Paris Regionen_UK
dc.typeArticleen_UK

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