An incremental physically-based model of P91 steel flow behaviour for the numerical analysis of hot-working processes

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dc.contributor.authorMurillo Marrodán, Alberto
dc.contributor.authorPuchi Cabrera, Eli Saúl
dc.contributor.authorGarcía Gil, Eduardo
dc.contributor.authorDubar, Mirentxu
dc.contributor.authorCortés Martínez, Fernando
dc.contributor.authorDubar, Laurent
dc.date.accessioned2026-04-14T12:37:31Z
dc.date.available2026-04-14T12:37:31Z
dc.date.issued2018-04-14
dc.date.updated2026-04-14T12:37:31Z
dc.description.abstractThis paper is aimed at modelling the flow behaviour of P91 steel at high temperature and a wide range of strain rates for constant and also variable strain-rate deformation conditions, such as those in real hot-working processes. For this purpose, an incremental physically-based model is proposed for the P91 steel flow behavior. This formulation considers the effects of dynamic recovery (DRV) and dynamic recrystallization (DRX) on the mechanical properties of the material, using only the flow stress, strain rate and temperature as state variables and not the accumulated strain. Therefore, it reproduces accurately the flow stress, work hardening and work softening not only under constant, but also under transient deformation conditions. To accomplish this study, the material is characterised experimentally by means of uniaxial compression tests, conducted at a temperature range of 900–1270◦C and at strain rates in the range of 0.005–10 s−1. Finally, the proposed model is implemented in commercial finite element (FE) software to provide evidence of the performance of the proposed formulation. The experimental compression tests are simulated using the novel model and the well-known Hansel–Spittel formulation. In conclusion, the incremental physically-based model shows accurate results when work softening is present, especially under variable strain-rate deformation conditions. Hence, the present formulation is appropriate for the simulation of the hot-working processes typically conducted at industrial scale.en
dc.description.sponsorshipFinancial support of the University of Deusto. Puchi-Cabrera gratefully acknowledges the financial support of Valenciennes Metropoleen
dc.identifier.citationMurillo-Marrodán, A., Puchi-Cabrera, E. S., García, E., Dubar, M., Cortés, F., & Dubar, L. (2018). An incremental physically-based model of P91 steel flow behaviour for the numerical analysis of hot-working processes. Metals, 8(4). https://doi.org/10.3390/MET8040269
dc.identifier.doi10.3390/MET8040269
dc.identifier.eissn2075-4701
dc.identifier.urihttps://hdl.handle.net/20.500.14454/5637
dc.language.isoeng
dc.publisherMDPI AG
dc.rights© 2018 by the authors
dc.subject.otherFEM
dc.subject.otherIncremental constitutive law
dc.subject.otherMechanical characterization
dc.subject.otherP91 steel
dc.subject.otherTransient deformation conditions
dc.titleAn incremental physically-based model of P91 steel flow behaviour for the numerical analysis of hot-working processesen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.issue4
oaire.citation.titleMetals
oaire.citation.volume8
oaire.licenseConditionhttps://creativecommons.org/licenses/by/4.0/
oaire.versionVoR
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