The temperature dependence of elastic properties

elastic anomalies and energy loss associated with structure relaxation of Zr-based bulk metallic glasses（BMGs）Zr

60.6

Cu

18.6

Ni

11.7

Al

9.1

and Zr

54.45

Cu

29.7

Al

9.9

Ni

4.95

Y

1

was investigated using dynamic mechanical analysis（DMA）.The glass transition temperature T

g

and the crystallization temperature T

x

were determined to be 689K

654K

733Kand 724Kby differential scanning calorimetry（DSC）.X-ray diffraction（XRD）analysis indicates that both the structures exhibit amorphous.DMA results indicate that kinks or valleys in the storage moduli occur near T

g

.Peaks of the loss moduli and the loss factor occur near T

g

.With the increase of the frequency

the peak amplitudes are decreased

and the peak temperature basically remains the constant value.βrelaxation is indicated by the excess wings.