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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 5    October 2003

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Computer simulation on primary α-phase of Al-7%Si solidification structure
LI Rong-de(李荣德)1, YANG Xiu-ying(杨秀英)1, Li Run-xia(李润霞)1
LI Chen-xi(李晨曦)1, LI Dian-zhong(李殿中)2, LI Qiang(李 强)2

1. School of Materials Science and Engineering,
Shenyang University of Technology, Shengyang 110023, China;
2. Institute of Metal Research, Chinese Academy of Sciences,
Shenyang 110016, China

Abstract:Finite difference method was used to calculate the macroscopic transportation phenomena(including temperature and concentration fields) of Al-7%Si(mass fraction) alloy. On the basis of the results,coupled with local area magnification, the nucleation and growth of primary α-phase of Al-7%Si were simulated. Relating the growth process of α-phase of Al-7%Si alloy in space with structures of a sample section, the morphology and precipitating process of primary α-phase of Al-7%Si alloy was simulated. The results are in good agreement with those obtained experimentally.

 

Key words: Al-7%Si alloy; macroscopic transportation; primary α-phase; simulation

ISSN 1672-7029
CN 43-1423/U

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