Structural Parameters of Mechanically Alloyed Cementite Doped with Nickel and Chromium

The changes in the structural parameters of phases in the mechanically alloyed (Fe\(_{{100-x-y}}\)Cr_xNi_y)₇₅C₂₅ system are considered depending on the annealing temperature and the concentrations of chromium and nickel. The XRD data obtained previously are considered for different samples, and it is shown that the lattice parameters of the cementite phase should be compared for the samples obtained under the best synthesis conditions. The lattice parameters of the phases formed after mechanical alloying differ from the reference values, approaching them at increased annealing temperatures. The lattice parameters of cementite formed after annealing also change depending on the doping element and differ from the parameters of both the reference cementite and the undoped mechanically alloyed cementite, which is explained by the influence of chromium and nickel on the lattice.