Viscosity of glass forming alloys based on Fe–Si–B system

The temperature dependences of kinematic viscosity of the amorphizing Fe80B14Si6, Fe77B15Si8, Fe78Ni1B12Si9, Fe78.5Ni1Mo0.5B14Si6 and Fe73.6Nb2.4Cu1B7.2Si15.8 melts in the temperature interval ranging from 1200 to 1600 °C under heating and cooling conditions have been studied. When heating the anomalies in the shape of sharp viscosity decrease have been revealed in the polytherms. On further cooling its hysteresis has been observed as well.