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Viscoelastic Relaxation of Bulk Metal Glass Zr46.75Ti8.25Cu7.5Ni10Be27.5 at High Temperature

Z.C. ZHOU, J.P. SHUI

Abstract


The internal friction of the bulk metallic glass (BMG) Zr46.75Ti8.25Cu7.5Ni10Be27.5 (at. %) originates from the viscoelasticity. The viscoelastic internal friction increases with decreasing vibration frequency at higher temperatures and increases with increasing frequency at lower temperatures. It gives rise to a minimum as a function of frequency. The proposed viscoelastic relaxation three-parameter model can be used to describe the viscoelastic internal friction of the present BMG.

Keywords


viscoelastic relaxation; bulk metallic glass; three-parameter modelText

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