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

Jiang Wu; Qing Wang; Weirong Chen; Qingyu Zhang; Jianbing Qiang; Chuang Dong

doi:10.1016/S1005-8850(07)60108-X

Volume 14 Issue S1

Jun. 2007

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Abstract

International Journal of Minerals, Metallurgy and Materials > 2007 > 14(S1): 50-53. > DOI: 10.1016/S1005-8850(07)60108-X

Jiang Wu, Qing Wang, Weirong Chen, Qingyu Zhang, Jianbing Qiang, and Chuang Dong, Glass formation of ternary Sm-based Sm-Al-Co bulk metallic glasses, J. Univ. Sci. Technol. Beijing , 14(2007), No. S1, pp.50-53. https://dx.doi.org/10.1016/S1005-8850(07)60108-X

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Materials

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

Jiang Wu¹⁾,
Qing Wang¹⁾,
Weirong Chen¹⁾,
Qingyu Zhang¹⁾,
Jianbing Qiang¹⁾ and
Chuang Dong^1,2), ,

Author Affilications

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

Funds:

This work was financially supported by the National Natural Science Foundation of China (No.50401020, 50671018 and 50631010) and the Provincial Science and Technology Foundation of Liaoning (No.20061067).

Received: 19 June 2006; Available Online: 15 June 2021

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Abstract

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

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