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Thermophysics and Aeromechanics

2022 year, number 1

Heat transfer coefficients of Mg70Li30 ultralight alloy

D.A. Samoshkin, R.N. Abdullaev, A.Sh. Agazhanov, S.V. Stankus
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: magnesium-lithium alloy, congruently melting composition, thermal conductivity, thermal diffusivity


The transfer properties of a congruently melting Mg-Li alloy with a lithium content of 30 at. %, considered as a promising ultralight structural material for the aerospace industry, have been studied experimentally. New experimental data on thermal diffusivity ( a ) and thermal conductivity ( l ) have been obtained in the temperature range of 293-777 K with estimated errors of 2 - 4 % and 3 - 5 %, respectively. The results have been compared with the known literature data on thermal conductivity of alloys from the Mg-Li system. A table of recommended temperature dependences for a and l of the studied composition has been developed.