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Title
Microstructure based flow stress model to predict machinability in ferrite–pearlite steelsPublished Date
2019Publisher
Elsevier Ltd.Keywords
ModellingMicro structure
Flow stress
Abstract
A new flow stress model is proposed to describe the behaviour of ferrite–pearlite steels based on microstructure properties, including the effect of high strains, strain rates and temperatures. The mo ... [+]
A new flow stress model is proposed to describe the behaviour of ferrite–pearlite steels based on microstructure properties, including the effect of high strains, strain rates and temperatures. The model introduces strain hardening as a function of the pearlite ratio, interlamellar spacing and ferrite grain size. A non-linear thermal softening, and the coupling between strain rate and temperature are also introduced. Tested on a 2D ALE model, predicted cutting forces, tool temperatures, chip thickness and tool wear results obtained good agreement when compared to orthogonal cutting tests of four ferrite–pearlite steels, covering a wide range of microstructure variants. [-]
Publisher’s version
https://doi.org/10.1016/j.cirp.2019.03.013ISSN
0007-8506Published at
CIRP Annals Vol. 68. Nº 1. Pp. 49-52, 2019Document type
Article
Version
Postprint – Accepted Manuscript
Rights
© 2019 Published by Elsevier Ltd on behalf of CIRPAccess
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