Luo what effect of ductile cast iron
Chromium is an anti graphitization element, which hinders the graphitization process of cast iron, increases the content of cementite (Fe3C) in the internal structure of cast iron, and stabilizes pearlite at the same time. It affects the mechanical and processing properties of nodular cast iron.
It should be chromium, chromium is anti graphitization elements in ductile iron if the content for a long time, will hinder the graphitization of cast iron, the iron cementite microstructure (Fe3C) content increased, the chilling tendency of the cast iron increases, will make iron brittle, hard, affect the mechanical properties and processing properties of nodular cast iron.
Chromium can improve the hardness, strength and wear resistance of nodular iron, and increase bainite in bainite ductile iron.