THE EFFECT OF Nb ADDITION ON THE GLASS FORMING ABILITY AND MECHANICAL PROPERTIES OF Zr55Cu30Al10Ni5 BULK METALLIC GLASS

In this paper, the effect of Nb addition on the glass forming ability, structure and mechanical properties of Zr55Cu30Al10Ni5 bulk metallic glass have been investigated using differential scanning calorimetry (DSC), X-Ray diffractometry and scanning electron microscope (SEM). Cylindricalspecimens with 3mm in diameter and 3 cm in length fabricated by two step Cu-mold suction casting method in order to obtain a high homogeneity in composition and structure. Compression test were performed at room temperature with very low strain rate. The stress-strain curves showed that the amount of Nb obviously affects the compressive strength and plastic strain of the specimens

Keywords:

bulk metallic glass , mechanical properties , glass forming ability , Nb