材料期刊网

Optimization and Calculation of the Al-Be-Si System

DU Yong Q.S.Ran JIN Zhanpeng G.Effenberg DING Wei Dept.of Materials Science and Engineering , Central-South University of Technology , Changsha , 410083 , ChinaMax-Planck-Institut fur Metallforschung , Institut fur Werkstoffwissenschaften , Heisenbergstrasse 5 , D-7000

材料科学技术（英文）

Lattice stability of Be is estimated,and interaction parameters for the liquids in the Al-Be and Be-Si systems are obtained using phase dia- gram data from literatures.Using the obtained parameters and the lattice stabilities of Al and Si given in the literatures,the Al-Be and Be-Si phase diagrams are calculated.By means of Kohler's for- mula the Gibbs energy for the liquid phase in the Al-Be-Si ternary system is extrapolated.The calcu- lation shows that no excess ternary term is necessa- ry for the thermodynamic description of the system. The liquidus projection,isothermal section at 1273 K,as well as vertical sections at 94 and 88 wt-% Al and 2 wt-% Be are calculated.The calcu- lated results are in reasonable agreement with the experimental data available.

关键词: thermodynamics , null , null , null , null , null