Determination of the vacancy migration enthalpy in a ternary Fe54Cr16Ni30 alloy, by Monte Carlo simulation of ordering kinetic, using a vacancy diffusion mechanism

We determined the vacancy migration enthalpy in a Fe54Cr16Ni30 stainless steel with a face-centered cubic structure by Monte Carlo simulation of the kinetic ordering by a vacancy diffusion mechanism. We have calculated isothermal curves of electrical resistivity variation as a function of time, at two different temperatures T-1 = 700 K and T-2 = 800 K (Barkani et al., 2007) [1], (Belkadi et al., 2019) [2]. The vacancy migration enthalpy determined in our work DHVM = (1.10 +/- 0.031) eV, is higher than that determined by Yoshihiro Sekio et al. [3] in an alloy with a composition close to that of our alloy, and which is 0.77 eV. It is slightly lower than that determined by Dimitrov et al. [4] who found a value of 1.17 eV, independent of nickel content for Fe-Cr-Ni steels containing 16% Cr and a nickel concentration ranging from 20%Ni to 45%Ni. (C) 2021 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the Fourth edition of the International Conference on Materials & Environmental Science.