Abstract
The sensitivity of glass forming ability (GFA) of Cu50Zr50 metallic glass towards addition of Nb and Al has been studied. It has been found that the GFA of Cu50Zr50 ribbons increases with addition of Nb and Al, and highest GFA is achieved at 4% Al. Moreover Al addition favors the formation of Bulk Metallic Glasses (BMG). Among various GFA parameters (ΔG, Trg, γ, γm, η, ΔTx, Q), it is the Gibbs free energy difference (ΔG), between the under cooled liquid and the corresponding crystalline phase, that best explains this variation in GFA.
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