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Observation of β-Relaxation in Sub-Tg Isothermally Annealed Al-Based Metallic Glasses

  • 1School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110178 2School of Materials and Metallurgy, Northeastern University, Shenyang 110004 3Key Laboratory for Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110004 4Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

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  • Received Date: May 19, 2008
  • Published Date: August 31, 2008
    Abstract
  • Al85Ni5Y8Co2 and Al85Ni5Y6Co2Fe2 metallic glasses are fabricated by melt spinning. A kink or a small exothermic peak is observed for both the samples isothermally annealed at sub-glass transition temperatures. Temperature modulated differential scanning calorimetry (TMDSC) data disapprove amorphous phase separation. The activation energies derived from Kissinger plots of the exothermic process on DSC curve around glass transition temperature are consistent with those of β-relaxation of metallic glasses.
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    • References (22)
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