Determination of CCT diagrams by thermal analysis of an HSLA bainitic steel submitted to thermomechanical treatment

Torsion tests simulating a simplified thermomechanical treatment typical a HSLA bainitic steel were carried out in order to measure the temperatures of start and finish of austenite transformation from the cooling curves. Cooling rates up to 100 deg C/s were employed and the values of the transforma...

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Bibliographic Details
Published in:Scripta materialia 1998-12, Vol.40 (2), p.165-169
Main Authors: Cota, A.B, Modenesi, P.J, Barbosa, R, Santos, D.B
Format: Article
Language:English
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Summary:Torsion tests simulating a simplified thermomechanical treatment typical a HSLA bainitic steel were carried out in order to measure the temperatures of start and finish of austenite transformation from the cooling curves. Cooling rates up to 100 deg C/s were employed and the values of the transformation temperatures on cooling were obtained from dT/dt vs. T curves. The CCT diagram built in this way was validated by metallographic results. This leads to the conclusion that a CCT diagram for steels thermomechanically processed and accelerated cooled can be obtained with the technique described in this paper.
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(98)00410-2