Kinetics of phase transformations in Fe-Ga alloys

Phase transformations in Fe$_{1-x}$Ga$_x$ alloys were theoretically investigated in this work. The Blume – Emery – Griffiths Hamiltonian and the Monte Carlo method were used to simulate the transitions in a three-dimensional cubic lattice with a D0$_3$ structure, consisting of iron and gallium atoms. The obtained data show that the phase transitions A2$\to$A2$+$B2$\to$A2 are observed at a high cooling rate. At a low cooling rate, a larger number of phases are observed, which is consistent with experimental data.