Investigation on deformation and wear of ZR-based amorphous alloys

Nanoindentation with spherical and Berkovich indenters, reciprocating wear and dynamic impact tests were conducted to investigate the deformation and wear behavior of two Zr-based metallic glasses. The results indicated that the indenter shape may have an effect on the displacement bursts in the load-penetration curves as no apparent bursts could be observed when a Berkovich indenter was used. This possible reason was postulated as the higher stress developed under a Berkovich indenter prompted a large number of small shear bands, confirmed by the steps observed around the indents. Compared to Zr ₅₅Al₁₀Ni₅Cu₃ alloy, Zr _41.25Ti_13.75Ni₁₀Cu_12.5Be _22.5 has higher resistance to both wear and dynamic impact. © Institute of Materials Engineering Australasia Ltd.