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dc.contributor.authorAhmadabadi, R. Mohammadi
dc.contributor.authorNaderi, M.
dc.contributor.authorMohandesi, J. Aghazadeh
dc.contributor.authorCabrera Marrero, José M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.identifier.citationAhmadabadi, R., Naderi, M., Mohandesi, J., Cabrera, J. Dynamic recrystallization behavior of AISI 422 stainless steel during hot deformation processes. "Journal of materials engineering and performance", Febrer 2018, vol. 27, núm. 2, p. 560-571.
dc.description.abstractIn this work, hot compression tests were performed to investigate the dynamic recrystallization (DRX) process of a martensitic stainless steel (AISI 422) at temperatures of 950, 1000, 1050, 1100 and 1150 °C and strain rates of 0.01, 0.1 and 1 s−1. The dependency of strain-hardening rate on flow stress was used to estimate the critical stress for the onset of DRX. Accordingly, the critical stress to peak stress ratio was calculated as 0.84. Moreover, the effect of true strain was examined by fitting stress values to an Arrhenius type constitutive equation, and then considering material constants as a function of strain by using a third-order polynomial equation. Finally, two constitutive models were used to investigate the competency of the strain-dependent constitutive equations to predict the flow stress curves of the studied steel. It was concluded that one model offers better precision on the flow stress values after the peak stress, while the other model gives more accurate results before the peak stress.
dc.format.extent12 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshStainless steel
dc.titleDynamic recrystallization behavior of AISI 422 stainless steel during hot deformation processes
dc.subject.lemacAcer inoxidable
dc.contributor.groupUniversitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.rights.accessOpen Access
upcommons.citation.authorAhmadabadi, R., Naderi, M., Mohandesi, J., Cabrera, J.
upcommons.citation.publicationNameJournal of materials engineering and performance

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