Study on the Mechanical Relaxations of a Zr_<36>Ti_<24>Be_<40> Amorphous Alloy by Time-Temperature Superposition Principle(Cross-disciplinary Physics and Related Areas of Science and Technology)
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概要
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In order to investigate the mechanical relaxation behavior of the Zr_<36>Ti_<24>Be_<40> amorphous alloy, the dynamic mechanical properties were measured using dynamic mechanical analyzer (DMA). From the data collected during isothermal multi-frequency dynamic mechanical measurements, the master curves for storage and loss moduli over a broad range of temperature were constructed using the time-temperature superposition (TTS) principle. The temperature dependence of the shift factor was found to follow the Arrhenius relationship and the activation energies, calculated from the Arrhenius relationship, were about 93 and 390kJ/mol for low temperature mechanical relaxation and viscous flow, respectively. According to the temperature dependence of the shift factor above T_g, no evidence for phase separation was found. The fragility index was also calculated from the relationship between shift factors and temperature and was found to be m ≈ 34, suggesting that the Zr_<36>Ti_<24>Be_<40> amorphous alloy can be classified into the 'strong' glass.
- 社団法人日本物理学会の論文
- 2004-11-15
著者
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Kim D
Center For Non-crystalline Materials Department Of Materials Science And Engineering Yonsei Universi
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Kim Do
Center For Non-crystalline Materials Department Of Materials Science And Engineering Yonsei Universi
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Jeong Hee
Department Of Physics Pusan National University
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Kim Do
Department Of Metallurgical Engineering Center For Non-crystalline Materials Yonsei University
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Fleury E.
Advanced Metals Research Center Korea Institute Of Science And Technology
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Hono K.
National Institute For Materials Sciences
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Hono K.
National Research Institute For Metals
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Kim W
Division Of Applied Science Cheongju University
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JEONG H.
Center for Non-Crystalline Materials, Department of Metallurgical Engineering, Yonsei University
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KIM W.
Applied Science Division, Chongju University
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KIM D.
Center for Non-Crystalline Materials, Department of Metallurgical Engineering, Yonsei University
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HONO K.
Metallic Nanostructure Group, National Institute for Materials Science
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Jeong H
Department Of Physics Pusan National University
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Hono K
National Institute For Materials Sciences
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Kim D.
Center For Non-crystalline Materials Department Of Metallurgical Engineering Yonsei University
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