Effects of Zr Addition on the Cold Workability of Resulphurized Steels

Abstract

Effects of Zr addition of up to 0.2% on the cold workability of low carbon resulphurized steels, containing up to 0.2%S are investigated in spheroidized and banded structures.Although a remarkable improvement of the compressive ductility is observed in Zr treated spheroidized steels with increaring Zr/S ratio in steel, Zr addition has no effect on the compressive ductility of annealed steels showing banded structure.The tensile ductility seems not to be enhanced by Zr addition. Relationship between the shape of sulphides and the compressive ductility is discussed.