Novel Grain Refiner for Hypo- and Hyper-Eutectic Al-Si Alloys

Abstract:

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A novel effective grain refiner for hypo and hyper-eutectic Aluminium-Silicon alloys has been developed. The composition of the grain refiner has been optimized to produce a fine grain structure and finer eutectic. Effectiveness of grain size under various cooling conditions has also been investigated to simulate various practical casting conditions. For comparative purposes, a wide range of Al alloys have been produced with the addition of commercially available Al-5Ti-B master alloys. The results show that the addition of novel grain refiner reduces the grain size significantly. As a result of fine grains, the porosity in the solidified alloys is remarkably lower. A notable improvement in mechanical properties has also been observed.

Info:

Periodical:

Edited by:

Hajo Dieringa, Norbert Hort and Karl Ulrich Kainer

Pages:

49-52

DOI:

10.4028/www.scientific.net/MSF.690.49

Citation:

M. Nowak and N. H. Babu, "Novel Grain Refiner for Hypo- and Hyper-Eutectic Al-Si Alloys", Materials Science Forum, Vol. 690, pp. 49-52, 2011

Online since:

June 2011

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Price:

$35.00

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