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Amorphous alloy; mechanical alloying; glass-forming ability; equivalent free energy.

Amorphous Zr₅₀Al_15−𝑥Ni₁₀Cu₂₅Y_𝑥 powders were fabricated by mechanical alloying at a low rotation speed from commercial pure element powders. The beneficial effect of Al partially substituted by Y in Zr₅₀Al₁₅Ni₁₀Cu₂₅ on glass-forming ability was investigated. The as-milled powders were characterized by X-ray diffraction and transmission electron microscopy. The results show that partial substitution of Al by Y can improve the glass-forming ability of Zr₅₀Al₁₅Ni₁₀Cu₂₅ alloy. Thermodynamic calculation of equivalent free energy shows that Zr₅₀Al_13.8Ni₁₀Cu₂₅Y_1.2 alloy has the highest glass-forming ability, which is in good agreement with the report of orthogonal experiments.

Woyun Long^{1 2} Anxian Lu² Jing Li¹

1. Department of Applied Physics, Hunan Agricultural University, Changsha 410128, P. R. China
2. School of Materials Science and Engineering, Central South University, Changsha 410083, P. R. China

Published

December 2013

Manuscript received

17 July 2012

Manuscript revised

20 January 2013