Investigation of impact of vacuum heat treatment on thermophysical properties of composite material of Al–SiC system with high content of reinforcing phase

Nyafkin A.N., Shavnev A.A., Serpova V.M., Razmakhov M.G., Pahomkin S.I.
UDC
669.018.95
DOI
10.18577/2307-6046-2020-0-11-60-67
Article PDF (Russian) (759.14 KB)
How to cite
Nyafkin A.N., Shavnev A.A., Serpova V.M., Razmakhov M.G., Pahomkin S.I. Investigation of impact of vacuum heat treatment on thermophysical properties of composite material of Al–SiC system with high content of reinforcing phase // Proceedings of VIAM. 2020. No. 11. DOI: 10.18577/2307-6046-2020-0-11-60-67. URL: https://test.viam.ru/en/journal/2020/11/7
Keywords
highly filled metal composite material, hot pressing of powders, powders of aluminium alloy, silicon carbide, temperature coefficient of linear expansion, thermal conductivity.
Abstract

The results of investigation of thermal treatment influence on thermophysical properties of metal composite material (MCM) based on aluminium casting alloy АК9ч (АЛ4) grade of Al–Si–Mg system reinforced with silicon carbide particles with content of reinforcing particles of 69±1% (volume) are given. MCM is made by solid-phase method followed by vacuum annealing. There are also presented studies of thermophysical characteristics of the material: thermal conductivity, temperature coefficient of linear expansion in the temperature range from 20 to 400 °C and density. It is shown that thermophysical characteristics depend on structural characteristics of the material.

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