Calculation of the Viscosity of Zr-Based Metallic Glass Alloys

Hui Qiang Li; Long Fei Liu

doi:10.4028/www.scientific.net/AMR.239-242.548

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 239-242Calculation of the Viscosity of Zr-Based Metallic...

Calculation of the Viscosity of Zr-Based Metallic Glass Alloys

Abstract:

With the effects of electronic structure and atomic size being introduced, a revised model to calculate the viscosity of the bulk metallic glass alloys was proposed and the viscosity of ternary Zr-Al-Cu, Zr-Ni-Al and quaternary Zr-Al-Ni-Cu systems are calculated in this paper, and the computed results agree well with the empirical one. The sequence of viscosity of different systems is: V_Zr-Al-Cu <V_Zr-Al-Ni<.V_Zr-Al-Ni-Cu. To Zr-Al-Cu and Zr-Ni-Al, the highest viscosity locates in the composition range of X_Zr=0.37-0.86, X_Cu=0-0.40 and X_Zr = 0.45-0.79, X_Al = 0.12-0.50, respectively. And to the Zr-Ni-Al-Cu system with 66.67% Zr, the highest viscosity is obtained in the region of X_Al= 0.63-0.80, X_Ni = 0.14-0.24.