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Preparation of Semisolid A356 Alloy by a Cooling Slope Processing

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Abstract:

In order to obtain the non-dendritic feedstock for the semisolid forming process, a cooling slope processing was used. In this work, the effects of the angle, length of cooling slope and pouring temperature on the microstructure of A356 aluminum alloy were investigated. It showed that these parameters affect the size and morphology of α-Al phase to some extent. The results indicate that a pouring temperature of 650°C and a cooling slope with 45° in angle and 50 cm in length are the optimum parameters for preparing fine and globular grain structures. To eliminate the solidification shell formed in the surface of cooling slope, a nitride dope was coated on the surface of the cooling slope.

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Periodical:

Materials Science Forum (Volumes 675-677)

Pages:

767-770

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.675-677.767

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Online since:

February 2011

Authors:

Jun Xu, Tong Min Wang, Zong Ning Chen, Jing Zhu, Zhi Qiang Cao, Ting Ju Li

Keywords:

A356 Aluminum Alloy, Cooling Slope, Microstructure, Semi-Solid

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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