Effect of aspect ratio on the compressive deformation and fracture behaviour of Zr-based bulk metallic glass

摘要

The compressive deformation and fracture features of Zr_(59)Cu_(20)Al_(10)Ni_8Ti_3 bulk metallic glassy samples with aspect ratios in the range of 0.67-2.00 have been investigated. The compressive plastic strain of the glass monotonically increases with decreasing aspect ratio, but the maximum strength almost maintains a constant value of 1.77-1.88 GPa. All the compressive shear-band angles are equal to approx 40 deg if modified by the rotation of the primary shear bands.