Paper Title:
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.

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
609-612
DOI
10.4028/www.scientific.net/MSF.449-452.609
Citation
W. J. Park, T. K. Ha, S. H. Ahn, Y. W. Chang, "Spray Casting of Al-25Si Alloy and Hot Deformation Behavior", Materials Science Forum, Vols. 449-452, pp. 609-612, 2004
Online since
March 2004
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$32.00
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