Graphite morphology control in cast iron

Graphite morphology in cast iron is analysed in terms of nucleation and growth kinetics of graphite crystals in liquid iron. The high interfacial energy between the graphite/melt interface does not allow the homogeneous nucleation of graphite in the melt. The efficacy of the heterogeneous substrates influences the growth undercooling.At small driving forces, i.e., low supersaturation or small kinetic undercooling, graphite growth is …