Simple record

dc.rights.licenseAttribution 4.0 International*
dc.contributor.authorPérez Martín, María Jesús
dc.contributor.otherSancho, Rafael
dc.contributor.otherSegurado, Javier
dc.contributor.otherErice, Borja
dc.contributor.otherGálvez, Francisco
dc.date.accessioned2020-07-13T12:48:58Z
dc.date.available2020-07-13T12:48:58Z
dc.date.issued2020
dc.identifier.issn1996-1944en
dc.identifier.otherhttps://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=159336en
dc.identifier.urihttp://hdl.handle.net/20.500.11984/1789
dc.description.abstractThe flow stress behaviour of a directionally solidified nickel-base superalloy,MAR-M247, is presented through the combination of experiments and crystal-plasticity simulations.The experimental campaign encompassed quasi-static and dynamic testing in the parallel andperpendicular orientation with respect to the columnar grains. The material showed low strain-ratesensitivity in all cases. Virtual samples were generated with DREAM3d and each grain orientation wasestablished according to the DS nature of the alloy. The elasto-visco-plastic response of each crystalis given by phenomenological-base equations, considering the dislocation–dislocation interactionsamong different slip systems. The hardening-function constants and the strain-rate sensitivityparameter were fitted with the information from tests parallel to the grain-growth direction and themodel was able to predict with accuracy the experimental response in the perpendicular direction,confirming the suitability of the model to be used as a tool for virtual testing. Simulations alsorevealed that in oligocrystalline structures of this type, the yield-strength value is controlled bythe grains with higher Schmid factor, while this influence decreases when plastic strain increases.Moreover, the analysis of the micro-fields confirmed that grains perpendicular to the loading axis areprone to nucleate cavities since the stresses in these regions can be twice the external applied stress.en
dc.description.sponsorshipResearch Council of Norwayes
dc.description.sponsorshipNorwegian University of Science and Technologyes
dc.language.isoengen
dc.rights© 2020 by the authors. Licensee MDPI, Basel, Switzerlanden
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectcrystal plasticityen
dc.subjectnickel-base superalloyen
dc.subjectoligocrystalen
dc.subjectFinite element methoden
dc.subjecthigh strain ratesen
dc.titleCrystal-plasticity-finite-element modeling of the dynamic response of a directionally solidified nickel-based superalloyen
dc.typeinfo:eu-repo/semantics/articleen
dcterms.accessRightsinfo:eu-repo/semantics/openAccessen
dcterms.sourceMaterialsen
dc.description.versioninfo:eu-repo/semantics/publishedVersionen
local.contributor.groupMecanizado de alto rendimientoes
local.description.peerreviewedtrueen
local.identifier.doihttps://doi.org/10.3390/ma13132990en
local.relation.projectIDCentre for Advanced Structural Analysis (SFI-CASA) (project number 237885)en
local.rights.publicationfeeAPCen
local.rights.publicationfeeamount1880 EURen
local.contributor.otherinstitutionUniversidad Politécnica de Madrides
local.contributor.otherinstitutionInstituto IMDEA Materialeses
local.contributor.otherinstitutionIkerbasquees
local.contributor.otherinstitutionNTNU-Trondheimes
local.source.detailsVol. 13. N. 13, 2020


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Simple record

Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International