Article Title

Glass formation of ternary Sm-based Sm-Al-Co bulk metallic glasses

Authors

Jiang Wu, State Key Lab of Materials Modification, Dalian University of Technology, Dalian 116024, China
Qing Wang, State Key Lab of Materials Modification, Dalian University of Technology, Dalian 116024, China
Weirong Chen, State Key Lab of Materials Modification, Dalian University of Technology, Dalian 116024, China
Qingyu Zhang, State Key Lab of Materials Modification, Dalian University of Technology, Dalian 116024, China
Jianbing Qiang, State Key Lab of Materials Modification, Dalian University of Technology, Dalian 116024, China
Chuang Dong, State Key Lab of Materials Modification, Dalian University of Technology, Dalian 116024, China; International Center of Materials Physics, Chinese Academy of Sciences, Shenyang, 110016, China

Corresponding Author

Chuang Dong^1,2*

1 State Key Lab of Materials Modification, Dalian University of Technology, Dalian 116024, China

2 International Center of Materials Physics, Chinese Academy of Sciences, Shenyang, 110016, China

Recommended Citation

Wu Jiang, Wang Qing, Chen Weirong, Zhang Qingyu, Qiang Jianbing, Dong Chuang. Glass formation of ternary Sm-based Sm-Al-Co bulk metallic glasses, Int. J. Miner. Metall. Mater., 14 (2007), No. 7, p. 50-53.

Keywords

Sm-based alloys; bulk metallic glasses; alloy design; cluster line; electron concentration

Abstract

Ternary Sm-based Sm-Al-Co alloys at specific compositions designed using an e/a- and cluster-related criteria exhibit high glass forming abilities and form bulk glassy rods of 3 mm in diameter by a copper mold suction-casting method. Four compositions of bulk metallic glasses (BMGs) are Sm₅₀Al₂₅Co₂₅, Sm₅₂Al₂₄Co₂₄, Sm₅₄Al₂₃Co₂₃ and Sm₅₆Al₂₂Co₂₂, which all satisfy a constant conduction electron concentration of 1.5. Among them, the BMG exhibiting the largest reduced glass transition temperature ( T_rg) is Sm₅₀Al₂₅Co₂₅, which reaches 0.648. The glass transition temperature T_g and the onset crystallization temperature T_x of this alloy are respectively 579 and 640 K at a heating rate of 20 K/min.