Abstract
The mechanical relaxation of Ce70Al10Cu20 bulk amorphous alloy has been investigated isothermally by dynamic mechanical analysis (DMA) from -70℃ to 70℃ in a frequency sweep mode. Our results show that the frequency- dependent internal friction curve has two different tendencies in the whole frequency range. The internal friction values decrease with frequency rising in the low frequency range, but increase in the high frequency range. It is proposed that these two different mechanical relaxations come from the different local structures in the metallic glass.
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