Open AccessStructure formation processes and thermal conductivity features of light Al-Si alloys with additional alloying by iron
Author(s) -
А. С. Жилин,
Oleg I. Rebrin,
I. M. Kovenskiy,
В. А. Быков,
V R Yalunina
Publication year - 2020
Publication title -
izvestiâ vysših učebnyh zavedenij. neftʹ i gaz
Language(s) - English
Resource type - Journals
ISSN - 0445-0108
DOI - 10.31660/0445-0108-2019-6-184-189
Subject(s) - silicon , alloy , thermal conductivity , materials science , aluminium , conductivity , metallurgy , morphology (biology) , electrical resistivity and conductivity , composite material , chemistry , biology , electrical engineering , genetics , engineering
Metallographic analysis and thermal conductivity analysis of series of light aluminum alloys with silicon content from 0 to 12 % (by weight) and additionally alloyed with iron 1 % (by weight) were carried out. It is shown that with an increase in the silicon content in the alloy above 4 – 6 % (by weight), the size of silicon crystals increases significantly with a simultaneous increase in the values of thermal conductivity. The article assesses the effect of iron on thermophysical properties and shows the correlation of thermal conductivity at different temperatures with the morphology of silicon in alloys with silicon content from 0 to 12 % (by weight) and additionally alloyed with iron 1 % (by weight). It is shown that alloy with a silicon content of 4 % by weight has a balanced reserve of thermophysical properties due to the structural features of the morphology of the components.