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J.m. Pelletier - One of the best experts on this subject based on the ideXlab platform.

  • Arrhenius activation of Zr 65 Cu 18 Ni 7 Al 10 bulk metallic glass in the supercooled liquid region
    Intermetallics, 2017
    Co-Authors: C. Zhang, Ji Chao Qiao, J.m. Pelletier, Yao Yao
    Abstract:

    Abstract In the current research, the dynamic mechanical spectrum and compressive deformation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region (SLR) are investigated. The experimental results prove the existence of transition from Newtonian Flow to non-Newtonian Flow in the metallic glasses. In addition, we found that the characteristic stress σtc, which is obtained by a stretched exponential function based on the normalized viscosity, can be regarded as a transition point from Newtonian to non-Newtonian Flow. The correlation between strain rate sensitivity exponent and corresponding strain rate was obtained at a certain temperature. It is noted that the variation of transition strain rate from Newtonian to non-Newtonian Flow with different absolute temperatures follows the Arrhenius equation. The activation energy is in good accordance with that using the mechanical spectroscopy method.

  • Arrhenius activation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region
    Intermetallics, 2017
    Co-Authors: C. Zhang, Ji Chao Qiao, J.m. Pelletier
    Abstract:

    In the current research, the dynamic mechanical spectrum and compressive deformation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region (SLR) are investigated. The experimental results prove the existence of transition from Newtonian Flow to non-Newtonian Flow in the metallic glasses. In addition, we found that the characteristic stress σtc, which is obtained by a stretched exponential function based on the normalized viscosity, can be regarded as a transition point from Newtonian to non-Newtonian Flow. The correlation between strain rate sensitivity exponent and corresponding strain rate was obtained at a certain temperature. It is noted that the variation of transition strain rate from Newtonian to non-Newtonian Flow with different absolute temperatures follows the Arrhenius equation. The activation energy is in good accordance with that using the mechanical spectroscopy method. © 2017 Elsevier Ltd

C. Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Arrhenius activation of Zr 65 Cu 18 Ni 7 Al 10 bulk metallic glass in the supercooled liquid region
    Intermetallics, 2017
    Co-Authors: C. Zhang, Ji Chao Qiao, J.m. Pelletier, Yao Yao
    Abstract:

    Abstract In the current research, the dynamic mechanical spectrum and compressive deformation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region (SLR) are investigated. The experimental results prove the existence of transition from Newtonian Flow to non-Newtonian Flow in the metallic glasses. In addition, we found that the characteristic stress σtc, which is obtained by a stretched exponential function based on the normalized viscosity, can be regarded as a transition point from Newtonian to non-Newtonian Flow. The correlation between strain rate sensitivity exponent and corresponding strain rate was obtained at a certain temperature. It is noted that the variation of transition strain rate from Newtonian to non-Newtonian Flow with different absolute temperatures follows the Arrhenius equation. The activation energy is in good accordance with that using the mechanical spectroscopy method.

  • Arrhenius activation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region
    Intermetallics, 2017
    Co-Authors: C. Zhang, Ji Chao Qiao, J.m. Pelletier
    Abstract:

    In the current research, the dynamic mechanical spectrum and compressive deformation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region (SLR) are investigated. The experimental results prove the existence of transition from Newtonian Flow to non-Newtonian Flow in the metallic glasses. In addition, we found that the characteristic stress σtc, which is obtained by a stretched exponential function based on the normalized viscosity, can be regarded as a transition point from Newtonian to non-Newtonian Flow. The correlation between strain rate sensitivity exponent and corresponding strain rate was obtained at a certain temperature. It is noted that the variation of transition strain rate from Newtonian to non-Newtonian Flow with different absolute temperatures follows the Arrhenius equation. The activation energy is in good accordance with that using the mechanical spectroscopy method. © 2017 Elsevier Ltd

Ji Chao Qiao - One of the best experts on this subject based on the ideXlab platform.

  • Arrhenius activation of Zr 65 Cu 18 Ni 7 Al 10 bulk metallic glass in the supercooled liquid region
    Intermetallics, 2017
    Co-Authors: C. Zhang, Ji Chao Qiao, J.m. Pelletier, Yao Yao
    Abstract:

    Abstract In the current research, the dynamic mechanical spectrum and compressive deformation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region (SLR) are investigated. The experimental results prove the existence of transition from Newtonian Flow to non-Newtonian Flow in the metallic glasses. In addition, we found that the characteristic stress σtc, which is obtained by a stretched exponential function based on the normalized viscosity, can be regarded as a transition point from Newtonian to non-Newtonian Flow. The correlation between strain rate sensitivity exponent and corresponding strain rate was obtained at a certain temperature. It is noted that the variation of transition strain rate from Newtonian to non-Newtonian Flow with different absolute temperatures follows the Arrhenius equation. The activation energy is in good accordance with that using the mechanical spectroscopy method.

  • Arrhenius activation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region
    Intermetallics, 2017
    Co-Authors: C. Zhang, Ji Chao Qiao, J.m. Pelletier
    Abstract:

    In the current research, the dynamic mechanical spectrum and compressive deformation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region (SLR) are investigated. The experimental results prove the existence of transition from Newtonian Flow to non-Newtonian Flow in the metallic glasses. In addition, we found that the characteristic stress σtc, which is obtained by a stretched exponential function based on the normalized viscosity, can be regarded as a transition point from Newtonian to non-Newtonian Flow. The correlation between strain rate sensitivity exponent and corresponding strain rate was obtained at a certain temperature. It is noted that the variation of transition strain rate from Newtonian to non-Newtonian Flow with different absolute temperatures follows the Arrhenius equation. The activation energy is in good accordance with that using the mechanical spectroscopy method. © 2017 Elsevier Ltd

Yao Yao - One of the best experts on this subject based on the ideXlab platform.

  • Arrhenius activation of Zr 65 Cu 18 Ni 7 Al 10 bulk metallic glass in the supercooled liquid region
    Intermetallics, 2017
    Co-Authors: C. Zhang, Ji Chao Qiao, J.m. Pelletier, Yao Yao
    Abstract:

    Abstract In the current research, the dynamic mechanical spectrum and compressive deformation of Zr65Cu18Ni7Al10 bulk metallic glass in the supercooled liquid region (SLR) are investigated. The experimental results prove the existence of transition from Newtonian Flow to non-Newtonian Flow in the metallic glasses. In addition, we found that the characteristic stress σtc, which is obtained by a stretched exponential function based on the normalized viscosity, can be regarded as a transition point from Newtonian to non-Newtonian Flow. The correlation between strain rate sensitivity exponent and corresponding strain rate was obtained at a certain temperature. It is noted that the variation of transition strain rate from Newtonian to non-Newtonian Flow with different absolute temperatures follows the Arrhenius equation. The activation energy is in good accordance with that using the mechanical spectroscopy method.

Markus A Schmidt - One of the best experts on this subject based on the ideXlab platform.

  • non Newtonian Flow of an ultralow melting chalcogenide liquid in strongly confined geometry
    Applied Physics Letters, 2015
    Co-Authors: Siyuan Wang, Chhavi Jain, Lothar Wondraczek, Katrin Wondraczek, Jens Kobelke, Johann Troles, Celine Caillaud, Markus A Schmidt
    Abstract:

    The Flow of high-viscosity liquids inside micrometer-size holes can be substantially different from the Flow in the bulk, non-confined state of the same liquid. Such non-Newtonian behavior can be employed to generate structural anisotropy in the frozen-in liquid, i.e., in the glassy state. Here, we report on the observation of non-Newtonian Flow of an ultralow melting chalcogenide glass inside a silica microcapillary, leading to a strong deviation of the shear viscosity from its value in the bulk material. In particular, we experimentally show that the viscosity is radius-dependent, which is a clear indication that the microscopic rearrangement of the glass network needs to be considered if the lateral confinement falls below a certain limit. The experiments have been conducted using pressure-assisted melt filling, which provides access to the rheological properties of high-viscosity melt Flow under previously inaccessible experimental conditions. The resulting Flow-induced structural anisotropy can pave the way towards integration of anisotropic glasses inside hybrid photonic waveguides.