Influence of the C and Mn concentration on the grains size of the Fe-Mn-C alloy

In the study of the material, the detailed study of the structure in the initial state is an important task. In the present study was studied the influence of Mn content on the average grain size in the hardened alloys with different carbon concentrations (1. C ∼ 1 wt. %, 2.C ∼ 0.4 wt. %) in the Fe-Mn-C alloys with the addition of alloying elements Cr and V. The grain structure of alloys was studied. It was revealed that after quenching the alloy has regular grain structure. The average grain sizes are within the ranges of 20-45 microns. It is found that in the alloys of the first group (about 1 wt. % C), the grain size decreases with the increased Mn concentration, there is no such relationship in the alloys of the second group (∼ 0.4 wt. % C).