Viscosity Measurements of Fe-Si-BCu-Nb-C Metallic Glass Melts by an Oscillating Crucible Method
LI Cheng-Dong1, TIAN Xue-Lei1, CHEN Xi-Chen1, A.G. Ilinsky2
1Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Ji’nan 250061
2Institute of Metal Physics, National Academy of Sciences Ukraine Ukr, 36 Vernadsky Blvd., UA-03680 Kiev, Ukraine
Viscosity Measurements of Fe-Si-BCu-Nb-C Metallic Glass Melts by an Oscillating Crucible Method
LI Cheng-Dong1;TIAN Xue-Lei1;CHEN Xi-Chen1;A.G. Ilinsky2
1Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Ji’nan 250061
2Institute of Metal Physics, National Academy of Sciences Ukraine Ukr, 36 Vernadsky Blvd., UA-03680 Kiev, Ukraine
Abstract： Dependence of the dynamic viscosity of new type of Fe-based
amorphous alloy (Fe68.5Si13.5B9Cu1Nb3C5) melt on temperature is investigated by using a torsional oscillation viscometer. The temperature dependence of the viscosity can be fitted by the Arrhenius relation and Fulcher expression as lnη = 0.082+ 1463.48/T and lnη = 6.75 x 10-5+954.71/(T-608.36), where η is the viscosity in units of cP and T is the temperature in units of K. The results show that the Arrhenius relation is more suitable in high temperature region, while the Fulcher expression is more appropriate in undercooled region. Combining the Differential scanning calorimetry data and free-volume model, the glass forming ability of Fe68.5Si13.5B9Cu1Nb3C5 alloy is discussed.
2003, Vol. 20 
