Abstract
One of the objectives of the steel industry is to control the thermal-mechanical treatment to create small ferrite grains, which when nucleating from dynamically recrystallized and conditioned austenite may be as small as 3μm. While several hypotheses have been put forward concerning the occurrence of dynamic recrystallization during the process of hot flat rolling of microalloyed steels, no direct proof has yet been provided. The accumulation of strains during strip rolling is possibly responsible for the recrystallization mechanism. In the present project multi-stage hot torsion and compression tests are attempted to confirm whether the softening, observed after the third stand in a hot strip mill, may be caused by metadynamic recrystallization.
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