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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    Special 1    November 2007

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Solidification simulation of Al-Mg-Er alloys using CALPHAD method
ZHANG Li-gang(章立钢)1, LIU Li-bin(刘立斌)1, 2, HUANG Guo-xing(黄国幸)1, JIA Bing-ran(贾兵然)1

1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. Key Laboratory of Hunan Province of the Nonferrous Metal Material Science and Engineering,
Central South University, Changsha 410083, China

Abstract:With CALPHAD(calculation of phase diagrams) method, the solidification paths of several Al-rich Al-Mg-Er alloys were calculated with Scheil—Gulliver model in the Thermo-calc software. And the amounts of several phases formed during solidification were also calculated. Synchronously, the heat-treatment temperatures of the same alloys were predicted by thermodynamic calculation. The calculated results show that by adding 0.4%Er (mass fraction), the strength effect of Er in Al-Mg alloy is better. This result is in agreement with the experimental investigations.

 

Key words: Al-Mg-Er alloys; solidification simulation; CALPHAD

ISSN 1672-7029
CN 43-1423/U

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