Thermal and mechanical properties of the (Cu_(36)Zr_(48)Al_8Ag_8)_(100-x)Si_x (x=0-1) amorphous alloys

摘要

In this study, (Cu_(36)Zr_(48)Al_8Ag_8)100_(-x)Si_x (x = 0-1) amorphous alloy rod with (2～4) mm diameter were prepared by arc melting. The thermal properties and microstructure development during the annealing of amorphous alloys have been investigated by the combination of differential scanning calorimetry (DSC),, X-ray diffractometry (XRD) and Vickers indentation. The XRD result reveals that all these as-quenched, (Cu_(36)Zr_(48)Al_8Ag_8)100_(-x)Si_x alloys exhibit the broad diffraction patterns of amorphous phase. A clear T_g (glass transition temperature) and supercooled region (about 102 K) were revealed for all of those amorphous alloy rods. The crystallization temperature (T_x), (ΔT_x) , and micro-hardness of (Cu_(36)Zr_(48)Al_8Ag_8)100_(-x)Si_x amorphous alloys is increased as the Si content.