中國(guó)有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 12 No. 3 June 2002 |
Zr65Cu25Al10 alloy
TENG Xin-ying(滕新?tīng)I(yíng))1, YE Yi-fu(葉以富)1，2,<
（1. Key Laboratory of Liquid Structure and Heredity of Materials,
Ministry of Education, Shandong University, Ji′nan 250061, China;
2. College of Resource and Environmental Engineering,
East China University of Science and Technology, Shanghai 200237, China）
Abstract:Crystallization behavior of amorphous Zr65Cu25Al10 alloy under isothermal annealing condition was investigated by DSC and XRD. It is found that two exothermic peaks appear in the DSC curve of amorphous Zr65Cu25Al10 alloy, indicating that the crystallization proceeds through double-stage m ode. The crystallization process of amorphous Zr65Cu25Al10 alloy under isothermal annealing condition is mainly controlled by nucleation and one-dimensional growth with the crystallized volume fraction smaller than 70%. With the crystallized volume fraction ranging from 70% to 90%, crystallization process is mainly dominated by the growth of three-dimensional pre-existing quench-in nuclei. And when the crystallized volume fraction reaches above 90%, transient nucleation becomes the master of the crystallization process.
Key words: crystallization kinetics; amorphous Zr65Cu25Al10 alloy; DSC; Avramiexponent
