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Determination of the Non-Recrystallisation Temperature (Tnr) of Austenite in High Strength C-Mn Steels

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Abstract:

In the present study non-recrystallisation (Tnr) and Ar3 temperatures have been determined for the C-Mn steels from multi-pass hot torsion experiments with continuous cooling in the temperature range of 1260°C to 600°C. Results show that Tnr decreases with increasing strain/pass, strain rate or interpass time. An alternative approach based on the work-hardening rate is proposed for the determination of Tnr and is shown to be more suitable in case the usual mean flow stress method does not provide a clear Tnr value.

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Periodical:

Materials Science Forum (Volumes 706-709)

Pages:

2722-2727

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.2722

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Online since:

January 2012

Authors:

Jai Gautam, Alexis G. Miroux, J. Moerman, Carla Barbatti, Peter van Liempt, Leo A.I. Kestens

Keywords:

Austenite, High Strength Steel (HSS), Non-Recrystallisation Temperature

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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