Issue |
Rev. Metall.
Volume 110, Number 6, 2013
|
|
---|---|---|
Page(s) | 429 - 431 | |
DOI | https://doi.org/10.1051/metal/2014001 | |
Published online | 31 January 2014 |
Short Communication
A new flow behaviour model for the austenite at high temperature
ArcelorMittal, R&D Automotive Products, Voie Romaine, 57283 Maizières-lès-Metz Cedex, France
e-mail: astrid.perlade@arcelormittal.com
Received: 27 November 2013
Accepted: 13 January 2014
A model has been developed to describe the rheology of austenite at high temperatures, characteristic from hot strip rolling of low-alloyed steels. It is based on the evolution of a single dislocation density through storage and strain rate-dependent dynamic recovery. The model gives good predictions of the stress-strain curves in a wide range of temperatures, strain rates and chemical compositions. It is now applied on industrial hot strip mills to predict the rolling loads of a wide range of industrial steels.
Key words: austenite / dislocation density / flow stress / rolling loads prediction
© EDP Sciences 2014
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