Effect of time on the isothermal viscosity of metallic glass supercooled liquids

The viscosity of metallic glasses is considered to remain constant during thermoplastic forming operations. Here, we quantify the time dependent change in isothermal Pt57.5Cu14.7Ni5.3P22.5 and Zr35Ti30Cu8.25Be26.75 glass formers supercooled liquid state. samples were isothermally held prior molding probe at different times. values extracted from filling length mold cavities. increased with annealing rate increase was found be largely independent temperature type former. However, higher outer parts which experienced shear molding. Crystal nucleation growth contributions are explain observed changes effective remaining amorphous phase. Our results suggest that an tool analyzing subtle structure liquids.