Influence of nickel addition and casting modulus on the properties of hypo-eutectic ductile cast iron

• DOI: 10.2298/jmmb181012023c
• Publication Date: 2019-04-18T09:25:16Z
• Authors: E. Colin-García; A. Cruz-Ramírez; G. Reyes-Castellanos; J.A. Romero-Serrano; R.G. Sánchez-Alva...; M. Hernández-Chávez
• Keywords: Ductile iron; Nodule (geology)

The effect of the casting modulus on distribution and features graphite in hypo-eutectic ductile iron unalloyed alloyed with nickel (0.88 wt %) was studied. cooling rate plates 25.4, 12.7 8.5 mm thickness a 6.87, 4.46 3.31 mm, respectively promotes several microstructural changes, such as cementite precipitation noticeable nodule count increment. addition suppressed formation improved nodularity for three evaluated. increased 69, 67 128 % 3.31, 6.87 respectively, regarding iron. It found that biggest produced nodules lowest both cast irons. Further to improvements features, allowed keep almost constant yield tensile strength ratio different modulus.