Interaction of stress corrosion cracks in single crystals Ni-Base superalloys

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dc.contributor.authorElsherkisi, Mustafa
dc.contributor.authorMartinez, Fabian Duarte
dc.contributor.authorMason-Flucke, Julian
dc.contributor.authorGray, Simon
dc.contributor.authorCastelluccio, Gustavo M.
dc.date.accessioned2024-02-14T09:46:41Z
dc.date.available2024-02-14T09:46:41Z
dc.date.issued2024-02-02
dc.description.abstractStress corrosion cracking (SCC) can be detrimental to nickel-based superalloy components exposed to harsh environments in aero-gas turbines. During flight, engines consume contaminants deposited on the surface of a blade, often leading to degradation. Cracking can initiate within minutes and rapidly propagate, depending on the temperature, contaminants, and applied stress. This study investigated the interaction between cracks in single-crystal turbine blades at intermediate temperatures by integrating experimental and computational methods. We performed C-Ring tests to quantify the time required for cracking, along with microscopic characterisation of the damage. In parallel, we developed a finite-element simulation for C-Ring tests using a phase field model calibrated to match the location of the cracks. The results demonstrated that the crack's characteristic spacing and length determine the likelihood of shielding or coalescing mechanisms.en_UK
dc.description.sponsorshipThe authors are grateful for the support from EPSRC Doctoral Training Partnership UK.en_UK
dc.identifier.citationElsherkisi M, Martinez FD, Mason-Flucke J, et al., (2024) Interaction of stress corrosion cracks in single crystals Ni-Base superalloys. Engineering Fracture Mechanics, Volume 298, March 2024, Article Number 109899en_UK
dc.identifier.eissn1873-7315
dc.identifier.issn0013-7944
dc.identifier.urihttps://doi.org/10.1016/j.engfracmech.2024.109899
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20789
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectPhase field modellingen_UK
dc.subjectNickel superalloysen_UK
dc.subjectStress Corrosion Crackingen_UK
dc.subjectcrack interactionsen_UK
dc.subjectstress shieldingen_UK
dc.titleInteraction of stress corrosion cracks in single crystals Ni-Base superalloysen_UK
dc.typeArticleen_UK
dcterms.dateAccepted2024-01-25

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