52 - Influence of B, Si and Inoculation in Counteracting the Effects of Increased Mn levels in Ferri

Abstract:

Influence of B, Si and Inoculation in Counteracting the Effects of Increased Mn levels in Ferritic Ductile Iron 

The purpose of this project was to evaluate the influence of varying levels of B, Si and inoculation at two levels of Mn in ferritic/pearlitic ductile iron with respect to the pearlite content and mechanical properties in castings of varying thicknesses. A DOE experiment was performed with four variables: two levels each of Si, Mn, B and inoculation. The variations included 2.3 and 2.8%Si, 0.3 and 0.6%Mn, trace and 0.002%B, and ladle versus ladle plus in-mold inoculation. In addition, section size was varied from ¼ inch to 2 inches.