Thermophysical properties of magnesium-lithium eutectic
A.Sh. Agazhanov, R.N. Abdullaev, D.A. Samoshkin, Yu.M. Kozlovskii
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: magnesium-lithium alloy, eutectic composition, thermal conductivity, thermal diffusivity, specific heat capacity, density, linear thermal expansion coefficient, relative elongation
Abstract
A comprehensive study of the thermophysical properties of an ultralight eutectic Mg-Li alloy (with a lithium content of 23 at.%), promising for use in the aerospace industry has been carried out. New reliable experimental data have been obtained for thermal conductivity, thermal diffusivity, specific heat capacity, density, linear thermal expansion coefficient and relative elongation of the alloy in the temperature range of 300 - 759 ÷781 K. The obtained results have been compared with well-known literature data on thermal conductivity and thermal expansion for Mg-Li system alloys. Approximation equations and a table of reference data of the studied properties are presented. The relative density change during melting of eutectic has been determined.
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