| La62Al15.7(Cu,Ni)22.3块体非晶合金的晶化行为 |
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| 引用本文： | 董亭义,杨 滨,张 勇.La62Al15.7(Cu,Ni)22.3块体非晶合金的晶化行为[J].稀有金属材料与工程,2009,38(10):1722-1726. |
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| 作者姓名： | 董亭义 杨 滨 张 勇 |
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| 作者单位： | 1. 北京科技大学,新金属材料国家重点实验室,北京,100083
2. 北京科技大学,新金属材料国家重点实验室,北京,100083;中国科学院国际材料物理中心,辽宁,沈阳,110016 |
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| 基金项目： | 国家自然科学基金，北京市自然科学基金 |
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| 摘 要： | 利用等温和变温晶化退火的方法对铜模吸铸La62Al15.7(Cu,Ni)22.3块体非晶合金的晶化行为进行了研究.结果表明,La62Al15.7(Cu,Ni)22.3块体非晶合金晶化过程分为3级,不同阶段的晶化产物分别为 La、Al3La和富Cu、Ni的未知相;非晶合金的驰豫激活能和3级晶化激活能的关系为:Eg
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| 关 键 词： | 镧基非晶合金 动力学 晶化 |
| 收稿时间： | 9/1/2008 12:00:00 AM |
Crystallization Behavior of La62Al15.7(Cu,Ni)22.3 Bulk Amorphous Alloy |
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| Dong Tingyi,Yang Bin and Zhang Yong.Crystallization Behavior of La62Al15.7(Cu,Ni)22.3 Bulk Amorphous Alloy[J].Rare Metal Materials and Engineering,2009,38(10):1722-1726. |
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| Authors: | Dong Tingyi Yang Bin and Zhang Yong |
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| Affiliation: | State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The crystallization behaviors of Cu-mold suction-cast La62Al15.7(Cu,Ni)22.3 bulk amorphous alloy were studied by isothermal and non-isothermal crystallization annealing method. The results show that the crystallization process of the amorphous alloys includes three stages; the products for the different stages are La, Al3La and Cu-and-Ni rich unknown phases, respectively. The activation energies Eg, Ep1, Ep2 and Ep3, corresponding to characteristic temperatures Tg, Tp1, Tp2 and Tp3, respectively, were obtained from the Kissinger and Ozawa equations. The relation of activation energies has the sequence of Eg
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| Keywords: | La-based amorphous alloy kinetics crystallization |
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