Casting Principle and Research Development of Austempered Ductile Iron

Austempered ductile iron has some characteristics, such as high strength, high toughness, excellence wear-resistant property, good heat resistance, fine corrosion resistance and eminent casting property. In this paper, the casting principle of austempered ductile iron is summarized, and the effect of the alloy elements (including C, Si, Mn, S, P, Mo, Ni, Cu, V, Nb and so on) and heat treatment on austempered ductile iron are introduced in details. Moreover, simply summarized the contents of the 4th International Conference on Austempered Ductile Iron and overviewed the progress of the research and production of austempered ductile iron and forecasted the application prospect of austempered ductile iron .