Chin. Phys. Lett.  2008, Vol. 25 Issue (9): 3357-3359    DOI:
Original Articles |
Observation of β-Relaxation in Sub-Tg Isothermally Annealed Al-Based Metallic Glasses
YANG Hong-Wang1,2, TONG Wei-Ping3, ZHAO Xiang2, ZUO Liang2, WANG Jian-Qiang4
1School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 1101782School of Materials and Metallurgy, Northeastern University, Shenyang 1100043Key Laboratory for Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 1100044Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
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YANG Hong-Wang, TONG Wei-Ping, ZHAO Xiang et al  2008 Chin. Phys. Lett. 25 3357-3359
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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.
Keywords: 64.70.Pe      65.60.+a      61.43.Dq      81.05.Kf     
Received: 20 May 2008      Published: 29 August 2008
PACS:  64.70.pe (Metallic glasses)  
  65.60.+a (Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.)  
  61.43.Dq (Amorphous semiconductors, metals, and alloys)  
  81.05.Kf (Glasses (including metallic glasses))  
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YANG Hong-Wang
TONG Wei-Ping
ZHAO Xiang
ZUO Liang
WANG Jian-Qiang
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