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dc.rights.licenseAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.contributor.authorAbedrabbo Hazbun, Anibal Faruk
dc.contributor.authorMadariaga, Aitor
dc.contributor.authorSoriano Moreno, Denis
dc.contributor.authorFernandez Manchado, Raul
dc.contributor.authorARRAZOLA, PEDRO JOSE
dc.contributor.otherPérez, Maite
dc.contributor.otherButano, Eva
dc.contributor.otherAbolghasem, Sepideh
dc.date.accessioned2023-02-13T07:25:27Z
dc.date.available2023-02-13T07:25:27Z
dc.date.issued2023
dc.identifier.issn2214-0697en
dc.identifier.otherhttps://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=171449en
dc.identifier.urihttps://hdl.handle.net/20.500.11984/5988
dc.description.abstractAutomotive transmission components are subjected to cyclic loads and, thus, must have a reliable fatigue performance. Since fatigue cracks nucleate at the surface, it is necessary to guarantee that its surface integrity accomplishes the required specifications. Typically, those components are finished by wet grinding after carburising heat treatment. However, there is an increasing demand to reduce pollutants and hazardous lubricants in the industry, and eco-friendly finishing operations have been highly encouraged. To this end, it is necessary to understand the effect of these novel finishing processes on surface integrity and, consequently, on fatigue behaviour. This study aims to assess the surface integrity and the fatigue performance of cryo-ground surfaces of 27MnCr5 steel, extensively used in fabricating shafts and gears for gearboxes. Fatigue specimens for pure torsion tests were initially case-hardened and afterwards finished using two different cryogenic grinding conditions applying liquid N2 and, as a reference, using the conventional wet grinding process. First, the surface integrity was analysed in terms of texture, residual stresses, microstructure, and microhardness. Second, the batches of specimens were tested under pure torsion fatigue. Surface residual stress relaxation was also measured during fatigue tests. Finally, fracture surfaces were observed to identify crack initiation sites and establish correlations with the surface integrity. Specimens produced by cryogenic and conventional wet grinding did not show microstructural defects or hardness reductions in the carburised layer. All conditions induced compressive residual stresses, and they barely relaxed during fatigue tests. Compressive residual stresses induced by cryogenic grinding were 10–20% lower than those generated by conventional wet grinding. This decrease resulted in a minor reduction of the fatigue resistance (4–6%) compared to the wet grinding. Importantly, this study demonstrates that with a slight geometrical radio correction in the design of the mechanical components (around 2.2%), cryogenic grinding generates pieces with the same fatigue strength as conventional grinding. Therefore, it confirms that cryogenic cooling could be a potential solution to replace pollutant coolant/lubricant fluid in grinding operations.en
dc.description.sponsorshipComisión Europeaes
dc.description.sponsorshipGobierno de Colombiaes
dc.language.isoengen
dc.publisherElsevieren
dc.rights© 2023 The Authorsen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCryogenic grindingen
dc.subjectLN2en
dc.subjectSurface integrityen
dc.subjectTorsional fatigueen
dc.subject27MnCr5en
dc.titleInfluence of cryogenic grinding surface on fatigue performance of carburised 27MnCr5es
dcterms.accessRightshttp://purl.org/coar/access_right/c_abf2en
dcterms.sourceJournal of Materials Research and Technologyen
local.contributor.groupMecanizado de alto rendimientoes
local.description.peerreviewedtrueen
local.description.publicationfirstpage1792en
local.description.publicationlastpage1804en
local.identifier.doihttps://doi.org/10.1016/j.jmrt.2023.01.111en
local.relation.projectIDinfo:eu-repo/grantAgreement/EC/RFCS/RFCS-2018-847284/EU/Improvement of the fatigue performance of automotive components through innovative ecofriendly finishing operations/FATECOen
local.relation.projectIDinfo:eu-repo/grantAgreement/Gobierno de Colombia/Colciencias/204-745-57650/CO//en
local.rights.publicationfeeAPCen
local.rights.publicationfeeamount598en
local.contributor.otherinstitutionhttps://ror.org/02h1b1x27es
local.contributor.otherinstitutionSidenor I+Des
local.contributor.otherinstitutionhttps://ror.org/00b7dkt53es
local.source.detailsVol. 23en
oaire.format.mimetypeapplication/pdf
oaire.file$DSPACE\assetstore
oaire.resourceTypehttp://purl.org/coar/resource_type/c_6501en
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85en


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Attribution-NonCommercial-NoDerivatives 4.0 International
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