The effect of the Cr/C on the microstructure

hardness

impact toughness

wear resistance of high chromium cast iron containing 31% Cr were investigated.The results show that

under the experiment condition

the prepared Cr31 high chromium cast iron all have hypereutectic microstructure and hexangular rod-like M7C3carbides.As the Cr/C increases

the carbides became smaller gradually

and its distribution became dispersively and well-distributed

and its relative quantity decreased.This shows that as the Cr/C increa...