| Fe-Ti二元体系的热力学重新优化(英文) |
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| 引用本文： | 薄宏,王江,Liliana DUARTE,Christian LEINENBACH,刘立斌,刘华山,金展鹏.Fe-Ti二元体系的热力学重新优化(英文)[J].中国有色金属学会会刊,2012,22(9):2204-2211. |
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| 作者姓名： | 薄宏 王江 Liliana DUARTE Christian LEINENBACH 刘立斌 刘华山 金展鹏 |
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| 作者单位： | 中南大学材料科学与工程学院;Laboratory for Joining and Interface Technology, Swiss Federal Laboratories for Materials Science and Technology, überlandstrasse 129, CH-8600, Dübendorf, Switzerland;中南大学 有色金属材料科学与工程教育部重点实验室 |
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| 基金项目： | Project (IP08-092009) supported by Sino Swiss Science and Technology Cooperation (SSSTC);Project (50971136) supported by the National Natural Science Foundation of China;Project (1343-71134001013) supported by the Scholarship Award for Excellent Doctoral Student granted by Ministry of Education of China |
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| 摘 要： | 为提高Fe-Ti二元系外推到三元或多元体系的能力,应用CALPHAD方法重新优化了该二元系。与前人的优化工作相比,重点放在对两个二元金属间化合物Fe2Ti和FeTi的热力学描述上。因目前普遍采用双亚点阵模型来描述C14_Laves相,所以采用双亚点阵模型来描述Fe2Ti相。通过检验包含Fe-Ti二元系的三元体系Fe-Ti边界上Fe2Ti相的均匀化范围进一步证实了Fe2Ti相的相边界。FeTi相具有BCC_B2晶体结构,因而将其处理成为BCC_A2相的有序相,并且用统一的Gibbs 能函数来描述有序和无序相。另外一个特别关注的方面就是重现这两个化合物的实测热容。计算结果与有关相图和热力学性质实验结果的广泛对比显示两者符合得很好,从而证明了所得热力学描述的有效性。
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| 关 键 词： | Fe-Ti体系 有序无序转变 热力学优化 相图 相图计算 |
| 收稿时间： | 30 September 2011 |
Thermodynamic re-assessment of Fe-Ti binary system |
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| BO Hong,WANG Jiang,Liliana DUARTE,Christian LEINENBACH,LIU Li-bin,LIU Hua-shan,JIN Zhan-peng.Thermodynamic re-assessment of Fe-Ti binary system[J].Transactions of Nonferrous Metals Society of China,2012,22(9):2204-2211. |
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| Authors: | BO Hong WANG Jiang Liliana DUARTE Christian LEINENBACH LIU Li-bin LIU Hua-shan JIN Zhan-peng |
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| Affiliation: | 1, 3 1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2. Laboratory for Joining and Interface Technology, Swiss Federal Laboratories for Materials Science and Technology, überlandstrasse 129, CH-8600, Dübendorf, Switzerland; 3. Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083, China |
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| Abstract: | |
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| Keywords: | Fe-Ti system order-disorder transition thermodynamic assessment phase diagram CALPHAD |
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