Show simple item record

dc.contributor.authorTarragó Cifre, Jose María
dc.contributor.authorCoureaux Mustelier, David
dc.contributor.authorTorres Hernández, Yadir
dc.contributor.authorJiménez Piqué, Emilio
dc.contributor.authorSchneider, Ludwig
dc.contributor.authorFair, Jonathan
dc.contributor.authorLlanes Pitarch, Luis Miguel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2018-01-12T09:49:30Z
dc.date.available2018-01-12T09:49:30Z
dc.date.issued2018-02
dc.identifier.citationTarrago, J., Coureaux, D., Torres, Y., Jimenez-Pique, E., Schneider, L., Fair, J., Llanes, L. Strength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography. "International journal of refractory metals and hard materials", Febrer 2018, vol. 71, p. 221.
dc.identifier.issn0263-4368
dc.identifier.urihttp://hdl.handle.net/2117/112707
dc.description.abstractStrength and reliability of WC-Co cemented carbides (hardmetals) are dependent on effective fracture toughness as well as on nature, size and distribution of processing flaws. Regarding toughness, they exhibit a crack growth resistance (R-curve) behavior, derived from the development of a multiligament bridging zone at the crack wake. Accordingly, successful implementation of fracture mechanics requires consideration of tangency criterion, between applied stress intensity factor and R-curve, in addition to fractographic inspection. It is the aim of this study to evaluate the strength behavior of a series of experimental WC-Co grades on the basis of R-curve failure criteria. Results indicate that microstructural effects on the strength of hardmetals may be satisfactorily rationalized following the referred criterion. The analysis includes consideration of nature and distribution of fracture origins, found to be more diverse and wider, respectively, for the harder fine-grained grades. This experimental evidence, together with the fact that these hardmetals exhibit steeper rising R-curves than tougher coarse-grained ones, leads to lower reliability for the former. This investigation documents and validates the great relevance of R-curve behavior for optimizing the mechanical performance of WC-Co cemented carbides on the basis of microstructural design.
dc.format.extent1 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshReliability
dc.subject.lcshFractography
dc.subject.lcshCarbides
dc.subject.otherFractography
dc.subject.otherR-curve behavior
dc.subject.otherReliability
dc.subject.otherStrength
dc.subject.otherWC-Co cemented carbides
dc.titleStrength and reliability of WC-Co cemented carbides: understanding microstructural effects on the basis of R-curve behavior and fractography
dc.typeArticle
dc.subject.lemacCarburs
dc.subject.lemacFractografia
dc.contributor.groupUniversitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural, Fiabilitat i Micromecànica dels Materials
dc.identifier.doi10.1016/j.ijrmhm.2017.11.031
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0263436817307631?via%3Dihub
dc.rights.accessOpen Access
local.identifier.drac21671236
dc.description.versionPostprint (author's final draft)
local.citation.authorTarrago, J.; Coureaux, D.; Torres, Y.; Jimenez-Pique, E.; Schneider, L.; Fair, J.; Llanes, L.
local.citation.publicationNameInternational journal of refractory metals and hard materials
local.citation.volume71
local.citation.startingPage221
local.citation.endingPage221


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record