The influence of alloying elements on surface hardness of ferritic nitrocarburizing layers of barrels

摘要

The article deals with a chemical composition of saturated layers after ferritic nitrocarburizing process. Experiments are focused on using of gas ferritic nitrocarburizing processes for surface treatment due to increasing of surface hardness with low influence on the dimensional accuracy. Ferritic nitrocarburizing processes were applied to steels 31CrMoV9 (sample B3), CSN 41 5330 (sample B3) and 32CrMoV12-10 (sample B4) used for weapon manufacturing, which were subsequently evaluated by electron microscopy, GDOES and microhardness methods. The results of measurement showed high influence of alloying elements on surface hardness of created carbidenitride layer after chemical-heat treatment process. Main task was to compare microhardness after ferritic nitrocarburizing in accordance with chemical composition.