Acta Metallurgica Sinica (English Letters) ›› 1999, Vol. 12 ›› Issue (4): 611-616.

• Research paper • Previous Articles     Next Articles

REFINING EFFECT OF BORON ON THE EUTECTIC SILICON IN HYPOEUTECTIC AlSi ALLOYS

L .Wang , X. F. Bian and S.J. Yuan MaterialScience and Engineering ,Shandong University of Technology,Jinan 250061 ,China   

  • Received:1999-08-25 Revised:1999-08-25 Online:1999-08-25 Published:2009-10-10

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Abstract: The effect of boron on the eutecticsilicon in hypoeutectic Al Si alloys has been studied withXRDand SEM. Thefindingindicatesthatboron hasastrong refining effecton eutecticsili con . AlB2 formed by boron additionto Al Si meltsactasthe nucleusofeutecticsilicon which leadstotherefinementofeutecticsilicon.

Key words: hypoeutectic Al Sialloys, refinementofeutecticsilicon , nucleusofsilicon

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