Study on the Mechanical Relaxations of a Zr36Ti24Be40 Amorphous Alloy by Time–Temperature Superposition Principle

H. T. Jeong, D. H. Kim, E. Fleury, W. Kim, K. Hono

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Abstract

In order to investigate the mechanical relaxation behavior of the Zr36Ti24Be40 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 390 kJ/mol for low temperature mechanical relaxation and viscous flow, respectively. According to the temperature dependence of the shift factor above Tg, 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 Zr36Ti24Be40 amorphous alloy can be classified into the ‘strong’ glass.

Original languageEnglish
Pages (from-to)3192-3197
Number of pages6
JournalJournal of the Physical Society of Japan
Volume73
Issue number11
DOIs
Publication statusPublished - 2004 Jan 1

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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