Grain Refinement Performance of Al Cast Using Machining Chips

Abstract:

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In this study, grain refinement performance of as-cast Al using machining chip of Al instead of the grain refiner is investigated. At first, the machining chips of pure Al are placed in metallic mold. Then, pure Al melt is inserted into the mold with the machining chips. From the microstructure of the as-cast Al using the machining chips, it is found that this machining chip in mold can induce grain refinement of as-cast Al. The increment of the Al chips enhances the grain refinement of the as-cast Al. Moreover, it is shown that preheating the mold can reduce the pore inside as-cast Al using the machining chips. This grain-refinement effect by the machining chips would come from the enhancement of cooling rate and the role of the nucleation site. Therefore, it is concluded that the machining chips of Al can enhance the grain refinement of as-cast Al.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

1444-1447

DOI:

10.4028/www.scientific.net/MSF.654-656.1444

Citation:

Y. Watanabe et al., "Grain Refinement Performance of Al Cast Using Machining Chips", Materials Science Forum, Vols. 654-656, pp. 1444-1447, 2010

Online since:

June 2010

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Price:

$35.00

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