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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 4    August 2003

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Numerical modelling of microstructure forming process for Al-Al3Fe eutectic alloy
LI Rong-de(李荣德), ZHOU Zhen-ping(周振平)

School of Materials Science and Engineering,
Shenyang University of Technology, Shenyang 110023, China

Abstract:A self-adjusting model was presented on the basis of the effect of temperature gradient on eutectic growth and a curved solid/liquid interface. Finite differential method was adopted to solve the model. The average lamellar spacing of the Al-Al3Fe eutectic alloy and the content fields ahead of the solidifying interface under different growth rates were calculated. Directional solidification experiments were carried out in order to prove the modification of the modeling. The experimental results are in relatively good agreement with the calculations.

 

Key words: Al-Fe eutectic alloy; numerical modelling; growth rate; lamellar spacing

ISSN 1672-7029
CN 43-1423/U

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