Pressure Dependence Of Elastic Constants And Debye Temperature For Zr50.5Ti4.8Cu19.0Ni11.4Al14.3 Bulk Metallic Glasses

The microstructure of Zr50.5Ti4.8Cu19.0Ni11.4Al14.3 bulk metallic glass (BMG) was investigated by high-resolution electron microscopy. The microstructure of the BMG is of homogenous composition and short-range ordered microstructure. Using an ultrasonic technique with the pulse echo overlap method, the pressure-dependent acoustic velocities of the BMG have been measured up to 0.5 GPa. The elastic constants and their pressure dependence have been obtained. The isothermal equation state (EOS) of the BMG is determined in terms of the Murnaghan form.