Zr57Cu15.4Ni12.6Al10Nb5块体非晶合金晶化行为研究

材料热处理学报, 2005, 26(4): 29-32. doi: 10.3969/j.issn.1009-6264.2005.04.009

Zr57Cu15.4Ni12.6Al10Nb5块体非晶合金晶化行为研究

杨元政 ^1, , 仇在宏 ^2, , 李喜峰 ^3, , 赵德强 ^4, , 谢致薇 ^5, , 匡同春 ^6, , 白晓军 ^7,

1.广东工业大学材料与能源学院,广东,广州,510643

2.广东工业大学材料与能源学院,广东,广州,510643

3.广东工业大学材料与能源学院,广东,广州,510643

4.广东工业大学材料与能源学院,广东,广州,510643

5.广东工业大学材料与能源学院,广东,广州,510643

6.广东工业大学材料与能源学院,广东,广州,510643

7.广东工业大学材料与能源学院,广东,广州,510643

基金项目: 广东省科技厅科技计划(2003B12106) 广东省自然科学基金(20010056) 国家自然科学基金(50371020)

关键词： ZrCuNiAlNb块体非晶合金 , 晶化 , 激活能 , 晶化指数

Study on Behavior of Crystallization of Zr57 Cu15.4 Ni12.6 Al10 Nb5 Bulk Amorphous Alloy

用示差扫描量热仪(DSC)研究了Zr57Cu15.4Ni12.6Al10Nb5块体非晶合金的匀速升温晶化与等温晶化的晶化行为.在匀速升温晶化方式下,用Kissinger法与Ozawa法获得了块体非晶合金的激活能,对第一晶化峰分别为320.5kJ/mol和316.6kJ/mol,对第二晶化峰分别为324.5kJ/mol和320.5kJ/mol.该非晶合金的晶化表现出明显的动力学效应.在等温晶化方式下,用Johnson-Mehl-Avrami方程获得了晶化的Avrami指数为1.61,表明非晶合金的晶化受原子扩散控制.

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