Viscosity and structure relaxation in Zr60Cu20Al10Ni10 metallic glass

This work reports the estimation of the viscosity, relaxation time and free volume of Zr60Cu20Al10Ni10 metallic glass (MG) by extrapolating differential scanning calorimetry (DSC), thermo-mechanical analyzer (TMA), and nanoindentation measurement data. The structural relaxation process of Zr60Cu20Al10Ni10 MG is shown through the study of viscosity and relaxation behavior also displayed by these measurements. It has the ability to exhibit strong fluid behavior near the glass transition temperature and exhibits a large strength parameter of 26.9 and a Vogel-Fulcher-Tamman temperature of 378 K. At the same time its stress relaxation exhibits sensitivity to strain rate and paused load. Finally, we estimated the residual free volume from melt freezing inside the Zr60Cu20Al10Ni10 MG by DSC technique as 0.041. These results indicate that the Zr60Cu20Al10Ni10 MG has a large free volume and exhibits both strong fluidic properties and significant stress relaxation behavior.

Automated summary

This study extrapolates the viscosity, relaxation time, and free volume of Zr60Cu20Al10Ni10 metallic glass (MG) through DSC, TMA, and nanoindentation measurement data. The results show that Zr60Cu20Al10Ni10 MG exhibits strong fluidic properties and significant stress relaxation behavior near the glass transition temperature. It has a large strength parameter and a Vogel-Fulcher-Tamman temperature. The estimation of residual free volume inside the Zr60Cu20Al10Ni10 MG is 0.041.