Metallurgical Aspects of Material Behaviour in Cutting of AISI 1045

Abstract:

This contribution first aims at providing a more detailed analysis of the cutting mechanisms of a normalized carbon steel from a microscopic and metallurgical point of view. SEM and EBSD are used to highlight, in the main intensive deformation zones of the chip, a drastic grain refinement induced by a dynamic recrystallization process. The second part of this study intends to emphasize the consequences of the latter on the workmaterial behaviour. A rheological study based on dynamic compression tests is briefly presented and enables to understand their occurrence as well as their influence on the flow stress of the material. A "metallurgy based" constitutive equation is identified to reach a better description of the flow stress. Finally, this one is implemented in a Finite Element code (Abaqus/Explicit) to assess the potential of this method. It is shown that microstructural evolutions could be relatively well predicted especially when considering the level of recrystallization.

• Periodical: Key Engineering Materials (Volumes 554-557)
• Pages: 2085-2092
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.554-557.2085
• Online since: June 2013
• Authors: Cédric Courbon, Tarek Mabrouki, Joël Rech, Denis Mazuyer, Fabien Perrard, Enrico D'Eramo
• Keywords: Constitutive Model, Cutting, Dynamic Recrystallization (DRX), Modeling, Shear Zones

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