The volume–temperature dependence of electrical and thermophysical properties of $\alpha$ iron under high pressures and temperatures

We present a modification of the semiempirical description of the volume–temperature dependences of the electrical and thermal conductivities of $\alpha$ iron that has a body-centered cubic lattice. We consider an interpolation of the volume–temperature dependences of the resistivity and thermal conductivity of $\alpha$ iron along high-temperature isobars and high-pressure isotherms in the pressure range from –5 to +5 GPa at temperatures of 400 – 800 K, which correspond to the thermodynamic conditions of the standard and emergency functioning of iron alloys. The interpolation of the electrical and thermophysical properties of $\alpha$ iron is performed based on the developed equation of state of $\alpha$ iron at high pressures and high temperatures. The effect of compression and extension on the thermal conductivity of $\alpha$ iron is estimated.