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| EFFECT OF REINFORCEMENT ON MORPHOLOGY OF SILICON PHASE IN ALUMINUM-SILICON ALLOY COMPOSITES |
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| DOI： |
| KeyWord:Composite Al_2O_3 fiber Aluminum-Silicon alloy Silicon phase |
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| Southern Institute of Metallurgy |
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| Abstract: |
| Al2O3/Al-Si alloy composites are manufactured by using squeeze casting.The effect of the reinforcement on the morphology of silicon phase in aluminum-silicon alloy is studied. The results indicate that there is a coupled interface between Al2O3 fiber and Si phase,and the fiber can serve as propitious sites for the heterogeneous nucleation of silicon phase. The primary silicon in the composite can nucleate on the surface of the fiber and grow into spherical shapes.The fiber in the composite can trigger twin during the coupled growth of Al-Si eutectic and lead to the modification of the eutectic silicon near the fiber. |
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