Abstract
The alloy rods with diameters of 3.0 mm of Cu50-xZr42Al8Agx(x=0,2,3,4)were prepared by means suspend melting-copper mold suction casting. The structure and thermal stability of the alloys were analyzed by X-ray diffraction (XRD) and differential scanning calorimetry (DSC), respectively. Subsequently, compression performance and fracture morphology of these bulk metallic glasses were investigated .we focus on analysis that influence of Ag micro-addition on the deformation and fracture of speciments. The results showed that the addition of Ag can enhance the forming ability and thermal stability of amorphous alloys. At the same time, with the increase of Ag content, the breaking strength of samples was improved from 1747Mpa to 2038Mpa. Without obvious plastic elongation percentage in bulk metallic owing to non-homogeneous modes of texturing at room-temperature. The compression failure behavior of test samples belong to elastic failure and the maximum failure extensibility is 3.7%.The fracture pattern of test samples all assume venation pattern.
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