Thermal stabilization of phase and structural state in binary lamellar metallic systems

The paper proposes and describes a physical model of thermally induced processes in binary lamellar systems. The model has been developed for the theoretical explanation of an experimentally revealed fact of thermal stabilization of intermetallic phases on the surface of a lamellar sample. Based on the model we developed an algorithm for calculations and a computer code that operates with three one-phase and two two-phase regions in the binary alloy state diagram. The computational model includes as inputs changes in concentration boundaries for existing phases with change in temperature, as well as arbitrary temperature-time regimes for the thermal treatment of the lamellar system under investigation. Good agreement between the theoretical calculations and Mossbauer investigations of binary lamellar Fe-Be systems has been achieved.