Effect of the Initial Microstructure on the Recrystallization of a Cold Rolled TRIP- Assisted Steel During Intercritical Annealing

摘要

The recrystallization of a 70% cold rolled TRIP steel (C=0.11%, Mn=1.53%, Si=1.26%) was examined. One part of the tested samples displayed a hot band structure of ferrite, tempered martensite and carbides whereas the other exhibited a ferrite - pearlite microstructure. For both groups of specimens, no interaction could be observed between the recrystallization and the phase transformation, but a strong influence of the carbide precipitation on the recovery and recrystallization was detected. The early nucleation textures in both steels are characterized by a dominant ND fibre (<111> // ND), which is the more intense in the steel with the hot band martensite structure.