Nanoindentation mechanical properties of glassy Cu29Zr32Ti15Al5Ni19

Abstract Cylindrical high entropy metallic glass Cu 29 Zr 32 Ti 15 Al 5 Ni 19 (φ1mm) was prepared via suction casting into a water-cooled mold. The mechanical properties of glassy Cu 29 Zr 32 Ti 15 Al 5 Ni 19 were valued via nanoindentation with Continuous Stiffness Measurement (CSM) mode. The results show that glassy Cu 29 Zr 32 Ti 15 Al 5 Ni 19 is of good plasticity and homogeneous. The average values of nano-hardness and modulus of high entropy bulk metallic glass Cu 29 Zr 32 Ti 15 Al 5 Ni 19 are 7.45 GPa and 105.4 GPa, respectively. Creep can be observed at room temperature when the alloy is held with a constant load. The average creep degree in holding stage is 52.4%, and the creep rate in steady-state creep is about 0.007% s −1 . The creep compliance begins with a constant and then increases with time.