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dc.contributor.authorAkbari, Zohreh
dc.contributor.authorMirzadeh, H.
dc.contributor.authorCabrera Marrero, José M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2015-09-17T10:31:54Z
dc.date.available2017-07-01T00:30:43Z
dc.date.created2015-07-15
dc.date.issued2015-07-15
dc.identifier.citationAkbari, Z., Mirzadeh, H., Cabrera, J. A simple constitutive model for predicting flow stress of medium carbon microalloyed steel during hot deformation. "Materials and design", 15 Juliol 2015, p. 126-131.
dc.identifier.issn0261-3069
dc.identifier.urihttp://hdl.handle.net/2117/76891
dc.description.abstractThe constitutive behavior of a medium carbon microalloyed steel during hot working over a wide range of temperatures and strain rates was studied using the Johnson-Cook (JC) model, the Hollomon equation, and their modifications. The original JC model was not able to predict the softening part of the flow curves and the subsequent modifications of the JC model to account for the softening stage and the strain dependency of constants were not satisfactory owing to the uncoupled nature of the JC approach regarding strain rate and temperature. The coupled effect of these variables was considered in the form of Zener-Hollomon parameter (Z) and the constants of the Hollomon equation were related to Z. This modification was found to be useful for the hardening stage but the overall consistency between the experimental flow curves and the calculated ones was not good. Therefore, a simple constitutive model was proposed in the current work, in which by utilization of the peak stress and strain into the Hollomon equation, good prediction abilities were attained. Conclusively, the proposed model can be considered as an efficient one for modeling and prediction of hot deformation flow curves. (C) 2015 Elsevier Ltd. All rights reserved.
dc.format.extent6 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.lcshSteel
dc.subject.otherConstitutive equations
dc.subject.otherHigh-temperature forming
dc.subject.otherDynamic recrystallization
dc.subject.otherdynamic recrystallization
dc.subject.othermagnesium alloys
dc.subject.otherstainless-steel
dc.subject.otherbehavior
dc.subject.othermicrostructure
dc.subject.othertemperature
dc.subject.otherworking
dc.titleA simple constitutive model for predicting flow stress of medium carbon microalloyed steel during hot deformation
dc.typeArticle
dc.subject.lemacAcer
dc.contributor.groupUniversitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.identifier.doi10.1016/j.matdes.2015.04.005
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0261306915001739
dc.rights.accessOpen Access
local.identifier.drac15643471
dc.description.versionPostprint (author’s final draft)
local.citation.authorAkbari, Z.; Mirzadeh, H.; Cabrera, J.
local.citation.publicationNameMaterials and design
local.citation.volume77
local.citation.startingPage126
local.citation.endingPage131


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