Abstract
Structural changes of the bulk metallic glass (BMG) Zr41.2Ti13.8Cu12.5Ni10Be22.5 were investigated at high pressure and high temperature with synchrotron radiation x-ray diffraction (SR-XRD). In situ SR-XRD measurements confirm that heating the BMG at a pressure of 10 GPa leads to an unusual sequence of transitions. The initial amorphous solid transforms into a crystalline phase at 582 K, and then the crystalline phase transforms back to an amorphous phase at 698 K. This crystalline-to-amorphous phase transition in a BMG is driven by increasing temperature at higher density produced by high pressure.
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