A NUMERICAL MODEL OF LAMELLAR SPACING OF Al-Si EUTECTIC

Acta Metallurgica Sinica (English Letters) ›› 2001, Vol. 14 ›› Issue (4): 291-295 .

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A NUMERICAL MODEL OF LAMELLAR SPACING OF Al-Si EUTECTIC

W.Q.Zhang, L.Xiao

School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China

Received:2001-06-08 Revised:2001-04-10 Online:2001-08-25 Published:2009-10-10
Contact: W.Q.Zhang

Abstract

Abstract: A numerical model is established to simulate the concentration field in irregular lamel-lar eutectic of Al-Si system.Both the undercooling and spacing are dependent on thegrowth rate and the temperature gradient,and increasing growth rate causes an in-crease of undercooling but a decrease of lamellar spacing,while increasing temperaturegradient leads to a decrease of lamellar spacing.The computed results are in goodagreement with experimental observations.

Key words: irregular eutectic, lamellar spacing, undercooling, growth rate

W.Q.Zhang, L.Xiao. A NUMERICAL MODEL OF LAMELLAR SPACING OF Al-Si EUTECTIC[J]. Acta Metallurgica Sinica (English Letters), 2001, 14(4): 291-295 .

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A NUMERICAL MODEL OF LAMELLAR SPACING OF Al-Si EUTECTIC

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