Date of Award


Document Type

Open Access Master's Thesis

Degree Name

Master of Science in Materials Science and Engineering (MS)

Administrative Home Department

Department of Materials Science and Engineering

Advisor 1

Paul Sanders

Committee Member 1

Joseph Licavoli

Committee Member 2

Douglas Swenson


The most common and costly detriments to ductile iron foundries are casting defects, particularly in new and complex components. The ability to understand the factors and processes that create microstructures and the associated properties would allow accurate virtual predictions of casting outcomes. An experimental study of standard foundry variables, carbon equivalent, return ratio, mold preparation, riser feed, and casting temperature on a target of 100-70-03 pearlitic, hypereutectic ductile iron provided the groundwork for an ICME database. Density decreased when the fraction of graphite nodules was greater due to the low density of graphite. A greater percentage of return scrap and higher CE level correlated to increased graphite nodule formation and count as well as increased hardness and density. Riser sleeve compression and mold hardness influenced the amount of material fed into a casting upon solidification. However, mold hardness in the range of 85 to 95 B-scale has little effect on the microstructure and mechanical properties of the casting.

Included in

Metallurgy Commons