Study of Dynamic and Static Recrystallization in Austenitic Nitrogen-Containing Steel During High-Temperature Thermomechanical Treatment

Resumo

Recrystallization of austenitic nitrogen-containing steel is studied during hot deformation in the range 800–1000°C. It is established that weakening occurs first immediately during hot plastic deformation, and second during post-deformation pauses between passes. In the first case weakening is accomplished as a result of dynamic recrystallization, and second as a result of static recrystallization. Conditions are determined for the start of dynamic recrystallization and the static recrystallization temperature is established, and also its time characteristics: incubation period τ₀ and completion time τ_c.