Morphology Improvement of Eutectic Carbides in Low Alloy Wear Resistant Cast Iron

Aimed at the eutectic carbides distributed at network shape in the cast iron,the effect of heat treatment on morphology of eutectic carbides in low alloy wear resistant cast iron after deformation was studied.The results show that the morphology and distribution of eutectic carbides in the cast iron improve by high temperature heat treatment and hot deformation,and the morphology of eutectic carbides is changed from continuous network into streaks and blocks;the network eutectic carbides are transformed into streaky and blocky carbides when the cast iron after 20% hot deformation is treated at 970℃ for 3 h.