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Previous ECSC supported projects have resulted in the development of 3-dimensional finite element (FE) codes, referred to as Prefect, an inhouse code and Abaqus, a commercial code for the analysis of metal deformation. This report shows how FE models have been further developed and validated for predicting metal deformation, evolution of microstructure and porosity during multipass rolling of long products. By designing specific detailed rolling schedules at low rolling temperature combined with heat treatments, the theoretical models of recrystallization based on Avrami equations, such as described by Sellars have been assessed. These pseudo-empirical algorithms, after validation over a wide range of conditions, have been linked to FE models to predict in a discreet manner the fraction statically recrystallized, the accumulated strain, the mean austenite grain size and the final grain size. The experimental work on two steel grades, a 316 stainless and a CMn steel, was carried out on a fully instrumented two high laboratory rolling mill.

Additional information

Authors: FARRUGIA D C J, British Steel plc, London (GB)
Bibliographic Reference: EUR 18398 EN (1998) 155pp., ECU 25.00
Availability: Available from the (2)
ISBN: ISBN 92-828-4605-9
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