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dc.contributor.authorCalvo Muñoz, Jessica
dc.contributor.authorCabrera Marrero, José M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2016-03-08T10:50:07Z
dc.date.available2018-03-15T01:30:19Z
dc.date.issued2016-03-15
dc.identifier.citationCalvo, J., Cabrera, J. Microstructural evolution and constitutive equations of Inconel 718 alloy under quasi-static and quasi-dynamic conditions. "Materials & Design", 15 Març 2016, vol. 94, p. 28-38.
dc.identifier.issn0264-1275
dc.identifier.urihttp://hdl.handle.net/2117/83950
dc.description.abstractThe deformation behavior of IN718 superalloy was investigated using the hot compression tests in the temperature range of 950-1100 °C, and strain rates covering the quasi-static to the quasi-dynamic regions (0.001-10 s-1). The shape of flow curves as well as the corresponding work hardening rates analysis was utilized to reveal the dynamic recrystallization (DRX) phenomena. DRX was the dominant restoration mechanism in the whole temperature and strain rate domains, which was characterized by the optical and EBSD images. Extended flow softening was observed at high strain rates due to the adiabatic heating and dislocations interaction. In addition to the assessment the capability of Sellars equations, a new constitutive equation based on the multiple variable regression analysis was proposed for modeling the peak stress as a function of strain rate and temperature. Besides the simple form of the proposed model, it has a good accuracy for predicting the peak stress.
dc.description.abstractThe deformation behavior of IN718 superalloy was investigated using the hot compression tests in the temperature range of 950-1100 °C, and strain rates covering the quasi-static to the quasi-dynamic regions (0.001-10 s-1). The shape of flow curves as well as the corresponding work hardening rates analysis was utilized to reveal the dynamic recrystallization (DRX) phenomena. DRX was the dominant restoration mechanism in the whole temperature and strain rate domains, which was characterized by the optical and EBSD images. Extended flow softening was observed at high strain rates due to the adiabatic heating and dislocations interaction. In addition to the assessment the capability of Sellars equations, a new constitutive equation based on the multiple variable regression analysis was proposed for modeling the peak stress as a function of strain rate and temperature. Besides the simple form of the proposed model, it has a good accuracy for predicting the peak stress.
dc.format.extent11 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshHeat resistant alloys
dc.subject.otherConstitutive equation
dc.subject.otherDynamic recrystallization
dc.subject.otherEBSD
dc.subject.otherHot compression test
dc.subject.otherInconel 718
dc.titleMicrostructural evolution and constitutive equations of Inconel 718 alloy under quasi-static and quasi-dynamic conditions
dc.typeArticle
dc.subject.lemacAliatges resistents a la calor
dc.contributor.groupUniversitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.identifier.doi10.1016/j.matdes.2015.12.157
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0264127515310170
dc.rights.accessOpen Access
local.identifier.drac17545059
dc.description.versionPostprint (published version)
local.citation.authorCalvo, J.; Cabrera, J.
local.citation.publicationNameMaterials & Design
local.citation.volume94
local.citation.startingPage28
local.citation.endingPage38


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