Crystallization kinetics of amorphous Zr₆₅Cu₂₅Al₁₀ alloy

来源期刊：中国有色金属学报(英文版)2002年第3期

论文作者：王焕荣 石志强 王艳 滕新营 叶以富 闵光辉 张均艳

文章页码：462 - 465

Key words：crystallization kinetics; amorphous Zr₆₅Cu₂₅Al₁₀ alloy; DSC; Avramiexponent

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.