Temperature deformation of the AX41 composites studied by the dilatometer measurements

Abstract

Magnesium alloy AX41 reinforced with 15 vol. % of short saffil fibres and AX41 hybrid composite with 5 vol.% of saffil fibres and 15 vol.% of SiC particles were used in this study. Thermal expansion was measured over a wide temperature range (295 K - 673 K).

The thermal expansion coefficient was estimated during heating and cooling. The Young's modulus of the fibre composite was estimated and the modulus defect was compared with the relative change of the CTE.

Dilatation characteristics of the pre-deformed hybrid composite were determined in the same temperature range as in the case of the fibre composite.

Keywords

• Metal matrix composites
• Thermal expansion
• Residual strains
• CTE