Tm. Liu et Cg. Chao, EFFECT OF MAGNESIUM ON MECHANICAL-PROPERTIES OF ALUMINA-FIBER-REINFORCED ALUMINUM-MATRIX COMPOSITES FORMED BY PRESSURE INFILTRATION CASTING, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 169(1-2), 1993, pp. 79-84
Al-Al2O3 composites containing 0.48%-6.8% Mg in the matrix alloys have
been fabricated by pressure infiltration casting. Optical microscopy,
scanning electron microscopy and image analysis were used to examine
and to analyze the details of the microstructure and the fracture surf
ace. Tensile tests were utilized to evaluate the mechanical properties
. The addition of magnesium was found to improve the infiltration and
to decrease the porosity of the composites. The tensile strength of th
e composites increased with increased magnesium content, while elongat
ion remained almost constant (10%).