Abstract
Cu–Zr–Ti–Sn bulk metallic glasses were produced by copper mold casting. The effects of Sn addition on glass-forming ability (GFA), thermal stability of the Cu 60Zr 30Ti 10 bulk metallic glass were investigated. It was found that a bulk metallic glass of 5 mm in diameter was prepared in a (Cu 60Zr 30Ti 10) 99Sn 1 alloy by copper mold casting. The addition of 1 at.% Sn is effective for an increase in GFA. The Δ T x and T g/ T l are 46 K and 0.63, respectively, for (Cu 60Zr 30Ti 10) 99Sn 1 alloy. With increasing the content of Sn, the value of T g/ T l increases, but the alloys begin to lose bulk metallic GFA. The new parameter γ has a better correlation with the GFA of the Cu-based alloys.
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