Thermal Physical Properties of Metals in a Quasi-Two-Phase Model

Abstract

Abstract—The applicability of the model of a two-phase locally equilibrium region for calculating the temperature dependences of heat capacities, linear thermal expansion coefficients, and thermal diffusivities of various metals is demonstrated. It is shown that the proposed relations make it possible to describe the increase in the thermal characteristic with increasing temperature and its changes associated with the implementation of the phase transition. The possibility of extrapolating the established dependences to experimentally unexplored areas is indicated. The relative simplicity of the established relationships, a certain universality of the model in describing various solids, and the visibility of the theoretical results obtained give hope for the use of the model in engineering and technical calculations.