INFLUENCE OF TREATING CONDITIONS ON STRUCTURE OF FORGED PIECES FROM THE STEEL GRADE C35E

The structure behavior of the steel grade C45E in dependence of heat and deformation conditions is presented in this contribution. The temperature relations of austenitic grain size in range 850 degrees C - 1250 degrees C, and deformation temperature influence on structure and recrystallization processes are considered in relationship with AIN precipitate presence. Intensive grain growth starts over temperature 1100 degrees C. Deformation 25% at temperature 1150 degrees C leads to fully recrystallized structure. Recrystallization processes are executed only partially after deformation at temperature 850 degrees C.