Nanoindentation mechanical properties of glassy Cu29Zr32Ti15Al5Ni19

作者：Pi, JinHong^*; Wang, ZhangZhong; He, XianCong; Bai, YunQiang; Zhen, Rui

来源：Journal of Alloys and Compounds, 2016, 657: 726-732.

DOI：10.1016/j.jallcom.2015.10.132

• High entropy alloy
• Bulk metallic glass
• Nanoindentation
• Creep

Cylindrical high entropy metallic glass Cu29Zr32Ti15Al5Ni19 (phi 1mm) was prepared via suction casting into a water-cooled mold. The mechanical properties of glassy Cu29Zr32Ti15Al5Ni19 were valued via nano-indentation with Continuous Stiffness Measurement (CSM) mode. The results show that glassy Cu29Zr32Ti15Al5Ni19 is of good plasticity and homogeneous. The average values of nano-hardness and modulus of high entropy bulk metallic glass Cu29Zr32Ti15Al5Ni19 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.

• 出版日期2016-2-5
• 单位南京工程学院