An investigation of the effect of rare earth elements (RE) on
erosion resistance of
nitrocarburized 38CrMoAl steel was carried out by using an erosion test rig in an aqueous slurry of quartz particles. Results indicate that a significant improvement occurs in erosion resistance of nitrocarburized 38CrMoAl steel by introducing RE in
nitrocarburizing processes comparing conventional nitrocarburizing processes. Measurement of mechanical properties exhibits that both hardness and impact
toughness of nitrocarburized 38CrMoAl steel increase by using RE in nitrocarburizing processes comparing with the conventional processes. RE provide an improvement in
Erosion resistance. Scanning electron microscopy reveales that the
furrow-like
peeling from plastic deformation of material is predominant erosion mechanism of RE nitrocarburizied 38CrMoAl steel, while the furrow-like peeling with initial cross crack and large grinding peelings takes place predominantly in tests of conventionally- nitrocarburized ones, which results in a significant difference in erosion resistance.
More summaries about the Effect of Rare Earth Elements on Erosion Resistance of Nitrocarburizing Layers of 38CrMoAl Steel