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dc.contributor.authorChicardi, E
dc.contributor.authorBermejo, Raul
dc.contributor.authorGotor Martínez, Francisco José
dc.contributor.authorLlanes Pitarch, Luis Miguel
dc.contributor.authorTorres Hernández, Yadir
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2017-11-24T08:09:54Z
dc.date.available2017-11-24T08:09:54Z
dc.date.issued2018-02
dc.identifier.citationChicardi, E., Bermejo, R., Gotor, F., Llanes, L., Torres, Y. Influence of temperature on the biaxial strength of cemented carbides with different microstructures. "International journal of refractory metals and hard materials", Febrer 2018, vol. 71, p. 82-91.
dc.identifier.issn0263-4368
dc.identifier.urihttp://hdl.handle.net/2117/111142
dc.description.abstractThe effect of the temperature on the mechanical strength of WC-Co cemented carbides with different microstructures (grain size and binder content) was evaluated. Biaxial flexural tests were performed on three cemented carbide grades at 600 °C using the ball-on-three-balls (B3B) method. Results were interpreted by Weibull statistics and compared to biaxial strength results at room temperature. A detailed fractographic analysis, supported by Linear Elastic Fracture Mechanics, was performed to differentiate the nature and size of critical defects and the mechanism responsible for the fracture. A significant decrease in the mechanical strength (around 30%) was observed at 600 °C for all grades of cemented carbides. This fact was ascribed to the change in the critical flaw population from sub-surface (at room temperature) to surface defects, associated with the selective oxidation of Co. Additionally, an estimation of the fracture toughness at 600 °C was attempted for the three cemented carbides, based upon the B3B strength results, the corresponding number of the tested specimens fragments and the macroscopic area of the B3B fracture surfaces. The fracture toughness was not affected by the temperature, at least up to 600 °C. In addition, the good agreement with the Single Edge Notch Beam toughness data suggests the possibility of employing this approach for fracture toughness evaluation of brittle materials under different testing conditions.
dc.format.extent10 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshCarbides
dc.subject.lcshTemperature
dc.subject.otherBall on three balls
dc.subject.otherCemented carbides
dc.subject.otherTemperature
dc.subject.otherWeibull statistics
dc.subject.otherbiaxial flexural strength
dc.titleInfluence of temperature on the biaxial strength of cemented carbides with different microstructures
dc.typeArticle
dc.subject.lemacCarburs
dc.subject.lemacTemperatura
dc.contributor.groupUniversitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural, Fiabilitat i Micromecànica dels Materials
dc.identifier.doi10.1016/j.ijrmhm.2017.11.003
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0263436817305905?via%3Dihub
dc.rights.accessOpen Access
local.identifier.drac21623577
dc.description.versionPostprint
local.citation.authorChicardi, E.; Bermejo, R.; Gotor, F.; Llanes, L.; Torres, Y.
local.citation.publicationNameInternational journal of refractory metals and hard materials
local.citation.volume71
local.citation.startingPage82
local.citation.endingPage91


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