Cast iron with compact graphite produced by small additions of rare earth metals and bismuth

摘要

This work presents results of investigations concerning cast iron with carbon equivalent CE equal to 4.35/4.59, treated with simultaneously introduced foundry alloys containing bismuth (about 2.0%) and rare earth metals (18% Ce). Cast iron with compact graphite precipitates has been obtained as a result of the applied treatment. It has been found that the change from flake to compact graphite takes place for trace amounts of bismuth (0.0005/0.0012%) and cerium (0.02/0.04%).