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Constitutive models for dynamic strain aging in metals: Strain rate and temperature dependences on the flow stress

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dc.affiliation.dptoUC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructurases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Dinámica y Fractura de Elementos Estructuraleses
dc.contributor.authorSong, Yooseob
dc.contributor.authorGarcía González, Daniel
dc.contributor.authorRusinek, Alexis
dc.contributor.funderComunidad de Madrides
dc.date.accessioned2023-07-18T11:31:51Z
dc.date.available2023-07-18T11:31:51Z
dc.date.issued2020-01-01
dc.description.abstractA new constitutive model for Q235B structural steel is proposed, incorporating the effect of dynamic strain aging. Dynamic strain aging hugely affects the microstructural behavior of metallic compounds, in turn leading to significant alterations in their macroscopic mechanical response. Therefore, a constitutive model must incorporate the effect of dynamic strain aging to accurately predict thermo-mechanical deformation processes. The proposed model assumes the overall response of the material as a combination of three contributions: athermal, thermally activated, and dynamic strain aging stress components. The dynamic strain aging is approached by two alternative mathematical expressions: (i) model I: rate-independent model; (ii) model II: rate-dependent model. The proposed model is finally used to study the mechanical response of Q235B steel for a wide range of loading conditions, from quasi-static loading (𝜀˙=0.001 𝑠−1 and 𝜀˙=0.02 𝑠−1) to dynamic loading (𝜀˙=800 𝑠−1 and 𝜀˙=7000 𝑠−1), and across a broad range of temperatures (93 𝐾−1173 𝐾). The results from this work highlight the importance of considering strain-rate dependences (model II) to provide reliable predictions under dynamic loading scenarios. In this regard, rate-independent approaches (model I) are rather limited to quasi-static loading.en
dc.description.sponsorshipD.G.-G. was funded by the Talent Attraction grant (CM 2018 - 2018-T2/IND-9992) from the Comunidad de Madrid. A.R. thanks UC3M-Santander for providing a chance for him to serve as the chair of excellence in the additive manufacturing division.en
dc.format.extent24es
dc.identifier.bibliographicCitationSong, Y., García-González, D., & Rusinek, A. (2020). Constitutive models for dynamic strain aging in metals: strain rate and temperature dependences on the flow stress. Materials, 13(7), 1794.en
dc.identifier.doihttps://doi.org/10.3390/ma13071794
dc.identifier.issn1996-1944
dc.identifier.publicationfirstpage1es
dc.identifier.publicationissue7, 1794es
dc.identifier.publicationlastpage24es
dc.identifier.publicationtitleMaterialsen
dc.identifier.publicationvolume13es
dc.identifier.urihttps://hdl.handle.net/10016/37885
dc.identifier.uxxiAR/0000025654
dc.language.isoengen
dc.publisherMDPIen
dc.relation.projectIDComunidad de Madrid. CM 2018 - 2018-T2/IND-9992es
dc.rights© 2020 by the authors. Licensee MDPI, Basel, Switzerlanden
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaFísicaes
dc.subject.ecienciaIngeniería Industriales
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.ecienciaMaterialeses
dc.subject.otherConstitutive modelen
dc.subject.otherDynamic strain agingen
dc.subject.otherProbability functionen
dc.subject.otherQ235b steelen
dc.subject.otherStrain rate effecten
dc.titleConstitutive models for dynamic strain aging in metals: Strain rate and temperature dependences on the flow stressen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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