Characterization of strength and microstructure in deformation processed Al-Mg composites

The microstructures, mechanical properties and electrical resistivity have been evaluated for deformation processed Al-20 vol % Mg and Al-13 vol % Mg composites. The Mg second phase adopts a convoluted, ribbon shape filamenta ry morphology after deformation. Both the size and spacing of these filamen ts decreases with deformation. The strength of these composites increases e xponentially with reduced spacing of Mg filaments. The electrical resistivi ty of these Al-Mg composites is slightly higher than that of pure Al. (C) 1 999 Kluwer Academic Publishers.