Open AccessОбъемно-температурная зависимость электро- и теплофизических свойств alpha-железа при высоких давлениях и температурах
Author(s) -
А.М. Молодец,
А.А. Голышев
Publication year - 2021
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2021.09.51220.104-21
Subject(s) - thermal conductivity , electrical resistivity and conductivity , thermodynamics , atmospheric temperature range , materials science , isobar , equation of state , volume (thermodynamics) , interpolation (computer graphics) , compression (physics) , thermal , chemistry , mineralogy , condensed matter physics , physics , atomic physics , motion (physics) , nucleon , quantum mechanics , classical mechanics
Modification of the semiempirical description of the volume-temperature dependence of the electrical conductivity and thermal conductivity of alpha-iron (iron having a body-centered cubic lattice structure) is presented. The 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 GPa to +5 GPa and temperatures of 400-800 K is considered for the conditions of normal and emergency operation of iron alloys. The interpolation of the electro-and thermophysical properties of alpha-iron is performed on the basis of the developed equation of state of alpha-iron at high pressures and temperatures. the effect of compression and tensile pressure on the thermal conductivity of alpha-iron is estimated.