Abstract:The influences of strain rates on mechanical properties and serrated flow behaviors of Zr67.76Cu11.94Ni8.30Al12 metallic glass composite have been investigated in this paper with statistical methods. The results demonstrate that both the plastic strain and the compressive strength decreased with the increasing of strain rates;Meanwhile, the serrated distribution of stress drop (Δσs) changed from a monotonical decreasing into a peak-like shape, the absolute frequency of it ranged from small to large interval. The serrated number of units of plastic strain (M) continuously declined. Moreover, the number of the shear bands of sample reduced and the interaction among them significantly weakened. According to the changes all above, the energy dissipation mechanism deteriorates and the increasing of the temperature and the shear expansion effects due to the energy accumulation within the material resulting the specimen fracture catastrophically occur.