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dc.contributor.authorBorsato, T.
dc.contributor.authorBerto, Filippo
dc.contributor.authorFerro, P.
dc.contributor.authorCarollo, C.
dc.date.accessioned2019-02-25T13:18:37Z
dc.date.available2019-02-25T13:18:37Z
dc.date.created2018-11-26T14:19:07Z
dc.date.issued2018
dc.identifier.citationFatigue & Fracture of Engineering Materials & Structures. 2018, 41 (11), 2231-2238.nb_NO
dc.identifier.issn8756-758X
dc.identifier.urihttp://hdl.handle.net/11250/2587261
dc.description.abstractMechanical and fatigue properties of heavy section solution–strengthened ferritic ductile iron (SSF‐DI) castings have been examined in this contribution. Amounts of silicon varying from 3.2 to 3.55 wt% have been used. The effect of antimony on counteracting the formation of chunky graphite has been evaluated. In order to estimate the influence of solidification defects (microshrinkage porosities or degenerated graphite particles) on the fatigue strength of the investigated materials, scanning electron microscope observations of the fracture surfaces and extreme value analysis of the crack initiating defect dimension, √area, have been performed. The propagation of the fatigue crack through the material has been observed by means of microstructural analysis of the cross sections of the fracture surfaces. It has been found that the treatment with Sb is useful to avoid the formation of degenerated graphite particles. Moreover, it has been observed that the most of the fatigue life is spent in the crack initiation stage, where the microshrinkage porosities play a major role. The presence of chunky graphite affects mostly the propagation stage. Finally, mechanical and fatigue properties of SSF‐DI have been compared with those obtained from traditional ductile cast iron specimens taken from the same casting geometry.nb_NO
dc.language.isoengnb_NO
dc.publisherWileynb_NO
dc.titleInfluence of solidification defects on the fatigue behaviour of heavy‐section silicon solution–strengthened ferritic ductile cast ironsnb_NO
dc.typeJournal articlenb_NO
dc.description.versionsubmittedVersionnb_NO
dc.source.pagenumber2231-2238nb_NO
dc.source.volume41nb_NO
dc.source.journalFatigue & Fracture of Engineering Materials & Structuresnb_NO
dc.source.issue11nb_NO
dc.identifier.doi10.1111/ffe.12810
dc.identifier.cristin1635171
dc.description.localcodeThis is the pre-peer reviewed version of an article, which has been published in final form at [https://doi.org/10.1111/ffe.12810]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.nb_NO
cristin.unitcode194,64,92,0
cristin.unitnameInstitutt for maskinteknikk og produksjon
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode2


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