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The relationship between viscosity and glass forming ability of Al-(Ni)-Yb alloy systems

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  • Special Topic on Bulk Metallic Glasses
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Abstract

The dynamic viscosity of Al-Yb and Al-Ni-Yb superheated melts was measured using a torsional oscillation viscometer. The results show that the temperature dependence of viscosity fits the Arrhenius law well and the fitting factors are calculated. The amorphous ribbons of these alloys were produced by the melt spinning technique and the thermal properties were characterized by using a differential scanning calorimetry (DSC). E (the activation energy for viscous flow), which reflects the change rate of viscosity, has a good negative relation with the GFA in both Al-Yb and Al-Ni-Yb systems. However, there is no direct relation between liquidus viscosity (η L ) and GFA. The superheated fragility M can predict GFA in Al-Yb or Al-Ni-Yb alloy system.

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Authors and Affiliations

  1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, **an, 250061, China

    Ran Jia, **uFang Bian, **aoQian Lü, KaiKai Song & XueLian Li

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  1. Ran Jia
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  2. **uFang Bian
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  3. **aoQian Lü
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  4. KaiKai Song
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Correspondence to **uFang Bian.

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Jia, R., Bian, X., Lü, X. et al. The relationship between viscosity and glass forming ability of Al-(Ni)-Yb alloy systems. Sci. China Phys. Mech. Astron. 53, 390–393 (2010). https://doi.org/10.1007/s11433-010-0142-x

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  • DOI: https://doi.org/10.1007/s11433-010-0142-x

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