Paper Title:
The Initial Practice on Electro-Modification Processes to Al-12Si Alloys
  Abstract

The modification of Si-flakes from coarse acicular to fine fibrous is a common issue in Al-Si alloys casting products. The one of aims of this work is to practice the probability of applying the pulsed electric discharge (PED) to modify the morphology of Si-flakes. In the experiment, the Al-12Si alloy cast in plaster mold was treated with high voltage pulse electric discharge during the solidification. The combined effects of strong pulse electric current and chemical additives of refiner/modifier on solidification structure of eutectic silicon and tensile properties were studied. The experimental results indicated that the eutectic silicon flakes can be fragmentized by high-density pulse electric current. The best tensile properties were obtained when pulse electric discharge was used and combined with a trifle addition of refiner/modifier into the molten metal.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
814-817
DOI
10.4028/www.scientific.net/AMR.189-193.814
Citation
H. G. Ren, Z. L. Zhao, "The Initial Practice on Electro-Modification Processes to Al-12Si Alloys", Advanced Materials Research, Vols. 189-193, pp. 814-817, 2011
Online since
February 2011
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Price
$32.00
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