Speaker
Description
Johannes Kreyca*, Sabine Zamberger – voestalpine Forschungsservicegesellschaft Donawitz GmbH, Kerpelystr. 199, A-8700, Austria
Matthew Galler – voestalpine Wire Rod Austria GmbH, Drahtstraße 1
8792 St. Peter-Freienstein, Austria
Ernst Kozeschnik – TU Wien, Getreidemarkt 9, 1060 Wien, Austria
*Corresponding: Johannes.kreyca@voestalpine.com
ABSTRACT
The combination of traditional semi-empirical through-process modelling techniques covering temperature evolution during production, recrystallisation and grain growth, and a sound thermodynamic framework (e.g. CALPHAD) is necessary for the accurate prediction of actual production processes and mechanical properties of the final product. In this work, an integrated approach, comprising the production steps of continuous casting and wire rolling, is developed and demonstrated on the basis of the wire production process at voestalpine. The essential sub models are presented and areas of recent research activity are detailed. Special emphasis is laid upon the matrix phase transformation from austenite to low temperature microstructures such as ferrite/pearlite/bainite/martensite or a mixture of these.
Keywords: through process modelling, calphad, matrix phase transformation, wire rolling