Investigation of viscosity and crystallization in supercooled-liquid region of Zr-based glassy alloys

► The viscosities of Zr-based glassy alloys were measured by TMA. ► Zr-Y1 alloy shows higher viscosity, better GFA and higher plasticity than others. ► Synchrotron diffraction results indicate the crystallization happens in supercooled liquid region. ► The higher viscosity and plasticity can be interpreted by crystallization in SLR.