Crystallization of the Amorphous Zr70Cu20Ni10 Alloy

• 来源期刊: 中国物理快报（英文版）
• 学科: 物理学
• 年，卷（期）: 2002,（11）
• 页码范围: 1653-1656
• 页数: 4页
• 分类号: O4
• 语种: 英文

摘要

Crystallization behaviour of the amorphous Zr70Cu20Ni10 alloy within the supercooled liquid region has been investigated by means of differential scanning calorimetry (DSC) and transmission electron microscopy (TEM).It is found that the relationship between the incubation time, which is necessary for the amorphous Zr70 Cu20Ni10 alloy to nucleate and grow, and the annealing temperature obeys an exponential function. A similar relationship can also be observed between the peak time corresponding to the minimum of the exothermic reaction in the DSC scan and the annealing temperature. TEM observations confirm that the first exothermic peak in the DSC trace of amorphous Zr70Cu20Ni10 alloy mainly corresponds to the precipitation of the Zr2Cu phase, while the second peak mainly corresponds to the precipitation of the nanoscale Zr2Ni phase.