Article Title

Formation and thermal stability of Cu-Zr-Al-Er bulk metallic glasses with high glass-forming ability

Authors

Junying Fu, Department of Materials Science and Engineering, Behang University, Beijing 100083, China
Hua Men, Department of Materials Science and Engineering, Behang University, Beijing 100083, China
Shujie Pang, Department of Materials Science and Engineering, Behang University, Beijing 100083, China
Chaoli Ma, Department of Materials Science and Engineering, Behang University, Beijing 100083, China
Tao Zhang, Department of Materials Science and Engineering, Behang University, Beijing 100083, China

Corresponding Author

Tao Zhang^*

Department of Materials Science and Engineering, Behang University, Beijing 100083, China

Recommended Citation

Fu Junying, Men Hua, Pang Shujie, Ma Chaoli, Zhang Tao. Formation and thermal stability of Cu-Zr-Al-Er bulk metallic glasses with high glass-forming ability, Int. J. Miner. Metall. Mater., 14 (2007), No. 7, p. 36-38.

Keywords

Cu-based alloy; bulk metallic glass; glass-forming ability; glass transition temperature; Erbium

Abstract

The formation and thermal stabilities of Cu_46.25Zr_{46.25- x}Al_7.5Er _x ( x=0 to 8) bulk metallic glasses (BMGs) were investigated. The addition of a small amount of Er (2at%) for replacing Zr effectively improves the glass-forming ability of Cu_46.25Zr_46.25Al_7.5 alloy, and the glassy rod with a diameter of at least 12 mm can be formed. The glass transition temperature ( T_g), temperature interval of supercooled liquid region △ T_x (= T_x- T_g), and reduced glass transition temperature T_rg (= T_g/ T_l) of Cu_46.25Zr_44.25Al_7.5Er₂ glassy alloy are 699 K, 62 K and 0.607, respectively.