| Cu-Zr-Al三元非晶合金形成范围的热力学预测 |
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| 引用本文： | 欧阳义芳,陈永丰,韦杰,唐翠勇,徐海龙,方杰.Cu-Zr-Al三元非晶合金形成范围的热力学预测[J].广西大学学报(自然科学版),2007,32(4):321-324. |
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| 作者姓名： | 欧阳义芳 陈永丰 韦杰 唐翠勇 徐海龙 方杰 |
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| 作者单位： | 广西大学,物理科学与工程技术学院,广西,南宁,530004 |
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| 基金项目： | 国家自然科学基金(50761002)，广西科学基金(0728025) |
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| 摘 要： | 用基于热力学观点的定量预测三元合金形成非晶成分范围的方法,对Cu-Zr-Al三元合金系形成非晶的成分范围进行了计算.该方法通过比较晶态固溶体的自由能和相应的非晶态的自由能来确定成分范围,在自由能的计算中,三元系的热力学数据由相应的3个二元系的热力学数据根据Toop模型外推得到,二元合金系的形成焓则通过Miedema理论的计算得出.结果表明,理论预测的形成非晶的成分范围与已有的实验结果符合得比较好.
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| 关 键 词： | Miedema理论 非晶合金 Toop模型 Cu-Zr-Al三元合金 |
| 文章编号： | 1001-7445（2007）04-0321-04 |
| 收稿时间： | 2007-09-27 |
| 修稿时间： | 2007-11-06 |
The amorphous forming range of Cu-Zr-Al predicted from thermodynamics |
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| OUYANG Yi-fang,CHEN Yong-feng,WEI Jie,TANG Cui-yong,XU Hai-long,FANG Jie.The amorphous forming range of Cu-Zr-Al predicted from thermodynamics[J].Journal of Guangxi University(Natural Science Edition),2007,32(4):321-324. |
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| Authors: | OUYANG Yi-fang CHEN Yong-feng WEI Jie TANG Cui-yong XU Hai-long FANG Jie |
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| Abstract: | The amorphous forming range of Cu-Zr-Al was predicted based on thermodynamic method.The Gibbs free energies for solid solution state and amorphous state were compared and the composition range of amorphous forming was then determined.The free energy of ternary system was extrapolated from the free energies of constituent binary systems by Toop's model.The formation enthalpies of binary systems were calculated with Miedema's theory.The results indicate that the predicted amorphous forming range of Cu-Zr-Al is in good agreement with the available experiments. |
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| Keywords: | Miedema's theory amorphous alloy Toop's model Cu-Zr-Al ternary alloy |
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