Investigation on As Cast Ductile Iron Containing Chromium (ACDICC)——Microstruc Ture And Mechanical Properties of ACDICC (PartI)
The relationship between the properties and microstructure, the relationship among properties, the test and comparison of fatigue property of as cast ductile iron containing chromium(ACDICC) were summarized. The results show that chromium is an advantageous element to ductile iron and can be contained 0.05wt% in the ductile iron, and can be used as an alloying element in as cast ductile iron without these heat treatment such as normalizing and annealing. Compared with as cast DI containing copper, the production cost is lower and can save 200-400 RMB per ton molten iron. In addition, the ductile iron has excellent fatigue property and casting characteristics. The reject ratio of casting is low. r.