Nanowear of a Zr Based Bulk Metallic Glass/Nanocrystalline Alloy

摘要

The hardness, elastic modulus, nano-scratch resistance and wear depth for a bulk metallic glass of Zr_(57)Nb_5Cu_(15.4)Ni_(12.6)Al_(10) and its partial crystallization alloys have been measured by using nanoindentation method. The results showed that partial crystallization did not influence the reduced elastic modulus but increased the hardness, and then increased the scratch coefficient. The scratch coefficient increased linearly with increasing the hardness H but decreases when H > 6.2GPa. Partial crystallization decreased evidently the wear depth, and when the load was large the wear depth decreased with increasing the hardness.