A NUMERICAL MODEL OF LAMELLAR SPACING OF Al-Si EUTECTIC
来源期刊：Acta Metallurgica Sinica2001年第4期
论文作者：L.Xiao W.Q.Zhang
Key words：irregular eutectic; lamellar spacing; undercooling; growth rate;
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.
L.Xiao1，W.Q.Zhang1
(1.School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China)
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;
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