Low Frequency Mechanical Spectroscopy of High Damping Mg-3wt.%Ni Alloy

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Abstract:

The Dynamic Mechanical Analysis (DMA) was applied to investigate the low frequency mechanical spectroscopy response of as-cast high damping Mg-3wt.%Ni hypoeutectic alloys. There are two peaks appearing on the temperature dependent damping spectrum (-100 - 420 °C). The broad peak P1 is overlapped by some small peaks due to the thermally activated dislocation movement, while the P2 peak is a solute grain boundary relaxation peak.

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Advanced Materials Research (Volumes 146-147)

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1761-1764

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October 2010

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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