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A simple physically-based Zerilli-Armstrong constitutive equation for modeling and prediction of hot deformation flow curves

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Mirzaie, Tina
Mirzadeh, Hamed
Cabrera Marrero, José M.Més informacióMés informacióMés informació
Document typeArticle
Defense date2016-03
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Generally, the dislocation-mechanics-based constitutive relations are applicable at high strain rates and relatively low temperatures. However, for expressing flow stress at elevated temperatures, it is required to account for the diffusion processes, namely softening effects of dynamic recovery (DRV) and dynamic recrystallization (DRX). In the current work, the Zerilli–Armstrong constitutive equation for face-centered cubic materials was appropriately modified by incorporation of peak strain and consideration of both hardening and softening phenomena. The developed constitutive relation was successfully applied to model the hot flow stress of a typical carbon steel and it was revealed that there is no need to alter the physically-based nature of the Zerilli–Armstrong constitutive equation by extensive modifications
CitationMirzaie, T., Mirzadeh, H., Cabrera, J. A simple physically-based Zerilli-Armstrong constitutive equation for modeling and prediction of hot deformation flow curves. "Mechanics of materials", Març 2016, vol. 94, p. 38-45. 
URIhttp://hdl.handle.net/2117/82836
DOI10.1016/j.mechmat.2015.11.013
ISSN0167-6636
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0167663615002550
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  • Departament de Ciència dels Materials i Enginyeria Metal·lúrgica - Articles de revista [961]
  • PROCOMAME - Processos de Conformació de Materials Metàl·lics - Articles de revista [260]
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