| Thermodynamic database of the phase diagrams in the Mg-Al-Zn-Y-Ce system |
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| 作者姓名： | LIU Xingjun WANG Cuiping WEN Mingzhong CHEN Xing PAN Fusheng |
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| 作者单位： | [1]Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China [2]College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China |
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| 摘 要： | The Mg-Al-Zn-Y-Ce system is one of the key systems for designing high-strength Mg alloys. The purpose of the present article is to develop a thermodynamic database for the Mg-Al-Zn-Y-Ce multicomponent system to design Mg alloys using the calculation of phase diagrams （CALPHAD） method, where the Gibbs energies of solution phases such as liquid, fcc, bcc, and hcp phases were described by the subregular solution model, whereas those of all the compounds were described by the sublattice model. The thermodynamic parameters describing Gibbs energies of the different phases in this database were evaluated by fitting the experimental data for phase equilibria and thermodynamic properties. On the basis of this database, a lot of information concerning stable and metastable phase equilibria of isothermal and vertical sections, molar fractions of constituent phases, the liquidus projection, etc., can be predicted. This database is expected to play an important role in the design of Mg alloys.
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| 关 键 词： | 热力学数据库 CALPHAD方法 相图 Mg-Al-Zn-Y-Ce系统 镁合金 |
| 收稿时间： | 2006-06-25 |
Thermodynamic database of the phase diagrams in the Mg-Al-Zn-Y-Ce system |
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| LIU Xingjun WANG Cuiping WEN Mingzhong CHEN Xing PAN Fusheng.Thermodynamic database of the phase diagrams in the Mg-Al-Zn-Y-Ce system[J].Rare Metals,2006,25(5):441-447. |
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| Authors: | LIU Xingjun WANG Cuiping WEN Mingzhong CHEN Xing PAN Fusheng |
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| Affiliation: | 1. Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China;2. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;1. Helmholtz-Zentrum, Geesthacht, Institute of Materials Research, Max-Planck-Str. 1, 21502 Geesthacht, Germany;2. National Institute for Interdisciplinary Science and Technology, CSIR, Pappanamcode (P.O), Thiruvananthapuram 695 019, India;1. Department of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm 100 44, Sweden;2. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, PR China;3. School of Materials Science and Engineering, Hunan University, Changsha 410082, PR China;1. College of Materials Science and Engineering, Guangxi University, PR China;2. Max-Planck-Institut für Eisenforschung GmbH, Postfach 140444, D-40074 Düsseldorf, Germany |
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| Abstract: | The Mg-Al-Zn-Y-Ce system is one of the key systems for designing high-strength Mg alloys. The purpose of the present article is to develop a thermodynamic database for the Mg-Al-Zn-Y-Ce multicomponent system to design Mg alloys using the calculation of phase diagrams (CALPHAD) method, where the Gibbs energies of solution phases such as liquid, fcc, bcc, and hcp phases were described by the subregular solution model, whereas those of all the compounds were de- scribed by the sublattice model. The thermodynamic parameters describing Gibbs energies of the different phases in this database were evaluated by fitting the experimental data for phase equilibria and thermodynamic properties. On the basis of this database, a lot of information concerning stable and metastable phase equilibria of isothermal and vertical sections, mo- lar fractions of constituent phases, the liquidus projection, etc., can be predicted. This database is expected to play an im- portant role in the design of Mg alloys. |
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| Keywords: | thermodynamic database CALPHAD method phase diagram Mg-Al-Zn-Y-Ce system magnesium alloys |
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