Phase Equilibria in AI-Ca-Li System： a Thermodynamic Description

Relations of equilibrium phases in the Al-Ca-Li system were calculated by means of the CALPHAD （calculation of phase diagram） method. The reported thermodynamic model parameters for all the constituent binary systems were directly used in the present calculation. A novel thermodynamic description fo...

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Bibliographic Details
Published in高等学校化学研究：英文版 no. 6; pp. 1167 - 1172
Main Author WANG Kun YIN Hui-qin CHENG Jin-hui ZUO Yong XIE Lei-dong
Format Journal Article
LanguageEnglish
Published 2013
Subjects
三元体系
模型参数
热力学参数
相图计算
相平衡
系统
计算相图
金属间化合物
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Summary:Relations of equilibrium phases in the Al-Ca-Li system were calculated by means of the CALPHAD （calculation of phase diagram） method. The reported thermodynamic model parameters for all the constituent binary systems were directly used in the present calculation. A novel thermodynamic description for the three ternary intermetallic compounds（τ1 τ2 and τ3） was made on the basis of experimental phase equilibria in the Al-Ca-Li system. Comparison between the calculated and experimental phase equilibria shows that we have successfully derived a set of self-consistent thermodynamic parameters for the Al-Ca-Li system. These parameters were then used for the prediction of the selected isothermal and isopleth sections and projected liquidus surface of this ternary system over the entire composition range.
Bibliography:Phase diagram;Thermodynamics;Alloy
22-1183/06
Relations of equilibrium phases in the Al-Ca-Li system were calculated by means of the CALPHAD （calculation of phase diagram） method. The reported thermodynamic model parameters for all the constituent binary systems were directly used in the present calculation. A novel thermodynamic description for the three ternary intermetallic compounds（τ1 τ2 and τ3） was made on the basis of experimental phase equilibria in the Al-Ca-Li system. Comparison between the calculated and experimental phase equilibria shows that we have successfully derived a set of self-consistent thermodynamic parameters for the Al-Ca-Li system. These parameters were then used for the prediction of the selected isothermal and isopleth sections and projected liquidus surface of this ternary system over the entire composition range.
ISSN:1005-9040
2210-3171