Temperature dependence of the viscoelastic response of In, Sn and In-Sn alloys
The elastic modulus and the internal friction of Sn and the γ-In-Sn phase are measured with a two-component piezoelectric oscillator at 50 kHz in the temperature range from 296 to 390 K. For both materials the viscoelastic responses at strains below 10-6 are described in terms of a Debye peak charac...
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| Autores principales: | , , , |
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| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09258388_v310_n1-2_p91_Hermida |
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| Sumario: | The elastic modulus and the internal friction of Sn and the γ-In-Sn phase are measured with a two-component piezoelectric oscillator at 50 kHz in the temperature range from 296 to 390 K. For both materials the viscoelastic responses at strains below 10-6 are described in terms of a Debye peak characterized by an effective activation enthalpy of 54.8 and 20.4 kJ/mol, for Sn and the γ-In-Sn phase, respectively. Due to their higher damping, the dynamic mechanical responses of In and the eutectic In-Sn were measured with a three-components piezoelectric resonator between 296 and 390 K at 50 kHz. The temperature dependence of the internal friction of the eutectic can be well described in terms of a single relaxation, time with an effective activation enthalpy of 38 kJ/mol. Indium is not only amplitude dependent but also exhibits thermal hysteresis. |
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