Numéro
J. Phys. IV France
Volume 120, December 2004
Page(s) 111 - 119
DOI http://dx.doi.org/10.1051/jp4:2004120012


J. Phys. IV France 120 (2004) 111-119

DOI: 10.1051/jp4:2004120012

Modelling the ferrite/carbide -> austenite transformation of hypoeutectoid and hypereutectoid steels

H. Surm, O. Kessler, M. Hunkel, F. Hoffmann and P. Mayr

Stiftung Institut für Werkstofftechnik, Bremen, Germany


Abstract
In the project "Distortion compatible heating during heat treatment'' of the Collaborative Research Center 570 "Distortion Engineering'' the mechanisms of distortion development during heating are analyzed. The factors of the austenitizing process influencing distortion during heat treatment are investigated by experiments as well as by computer simulation. To predict distortion during heating with computer simulation, the ferrite + carbide into austenite transformation has to be modeled accurately. A model, based on the Johnson-Mehl-Avrami equation, was developed to describe the transformation of hypoeutectoid and hypereutectoid steels during continuous heating with constant heating rate.



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