Effects of Fused Silica Addition on Thermal Expansion, Density, and Hardness of Alumix-231 Based Composites.

ABSTRACT: Fused silica is a ceramic with promising applications as a filler in composites due to its near-zero thermal expansion. Substitution of heavy cast iron with Al-based light alloys is of utmost importance for the automotive industry. However, the high thermal expansion of Al alloys is an obstacle to their use in some applications. As such, ceramic fillers are natural candidates for tuning thermal expansion of Al-based matrices, due to their inherently moderate or low thermal expansion. Alumix-231 is a new promising alloy, and fused silica has never been used before to lower its thermal expansion. Composites with the addition of 5 to 20 vol.% of fused silica were developed through powder metallurgy, and the best results in terms of reduction of thermal expansion were reached after liquid phas

SUBMITTER: Rodrigues LM 

PROVIDER: S-EPMC9143313 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature