Abstract: According to the characteristic of non-equilibrium solidification process of gray iron, a set of method for modeling its solidified structure, and the method contained calculating volume fraction of dendritic austenite and treatment of grain impingement is proposed. The method is verified with a specimen poured in a sample cup, and the result shows that cooling curve, dendritic austenite fraction and eutectic cell density by modeling are in good agreement with data by experiment.

Key words: Gray iron, Micro-modeling, Non-equilibrium solidification