Compromise Between Stable and Metastable Solidifications
The solidification according to the stable or metastable diagrams will depend on both the composition, size of the parts to be cast and the superheating. In this way, we have seen in Chap. 1, the elements that favour one or other solidification. In this chapter, we will see the effect of the parts size and the superheating, and we will see that it is possible to obtain a cast iron with simultaneously both white and grey eutectics, known as mottled cast iron. The ternary eutectic composed of Fe3P, Fe3C and Fe (steadite) is also described in this chapter.