A NUMERICAL MODEL OF LAMELLAR SPACING OF Al-Si EUTECTIC |
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Authors: | WQZhang LXiao |
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Affiliation: | School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China |
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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 the growth rate and the temperature gradient, and increasing growth rate causes an in- crease of undercooling but a decrease of lamellar spacing, while increasing temperature gradient Leads to a decrease of Lamellar spacing. The computed results are in good agreement with experimental observations. |
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Keywords: | irregular eutectic Lamellar spacing undercooling growth rate |
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