Spray Casting of Al-25Si Alloy and Hot Deformation Behavior

Woo Jin Park; Tae Kwon Ha; Sang Ho Ahn; Young Won Chang

doi:10.4028/www.scientific.net/MSF.449-452.609

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HomeMaterials Science ForumMaterials Science Forum Vols. 449-452Spray Casting of Al-25Si Alloy and Hot Deformation...

Spray Casting of Al-25Si Alloy and Hot Deformation Behavior

Abstract:

The spray forming process was used to produce Al-25Si alloy in this study. The microstructure of the hypereutectic Al-25Si alloy appeared to consist of Al matrix and equiaxed Si particles with average diameter of 5~7 µm. To deduce the extrusion condition, a series of compression tests has been conducted at temperatures ranging from RT to 500oC. The strain rate sensitivity parameter (m) of this alloy has been found to be very low ( ≤0.1) below 300oC and reached maximum value of about 0.13 at 500°C. The extrusion has been successfully conducted at the temperatures of 300°C and above with the ratio of area reduction of 28 and 40. The processing map for hot working has also been constructed.

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Periodical:

Materials Science Forum (Volumes 449-452)

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609-612

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.449-452.609

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Online since:

March 2004

Authors:

Woo Jin Park, Tae Kwon Ha, Sang Ho Ahn, Young Won Chang

Keywords:

Hot Workability, Hypereutectic Al-Si Alloy, Processing Map, Spray Casting

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