Prediction and fabrication of Ti-Zr-Co ternary metallic glasses based on effective atomic radius in Ti solid solution from first-principles calculations

New Ti-based metallic glasses were designed and fabricated in the ternary component alloy system Ti-Zr-Co. The constituent elements of the alloy system were selected based on three empirical rules proposed by Inoue, Turnbull, Senkov and Miracle, and by a new parameter called the effective atomic radius, which is based on the first-principles calculations for 2.78 at.% hcp Ti alloys. The reported scheme based on the concept of binary eutectic clusters was applied to predict the alloy composition that shows a glass transition, Ti44Zr30Co26. We prepared Ti44Zr30+ xCo26- x. Ti46Zr28+ xCO26- x, and Ti48Zr26+ xCO26- x (X = 0, 4, 6, 8) alloy sheets using a single roller method. The new Ti-based ternary metallic glasses exhibited vitrification for many compositions around the predicted composition of Ti44Zr30Co26. The greatest value of the super-cooled region (sic)T-x was 34 K for Ti48Zr32Co20. (C) 2014 Elsevier B.V. All rights reserved.