Paper Title:
Effect of Alloying Elements on Mechanical Properties for A356 Casting Alloy
  Abstract

A quantitative study of the interactions between microstructural features such as secondary dendrite arm spacing (DAS), eutectic structure and fatigue behavior of two Al-Si-Mg casting alloys with silicon contents of 7% and 10% respectively, has been conducted. In the condition of minimizing casting defects, the influence of microstructural features on the mechanical performance becomes more pronounced. Depending on the magnesium content affecting the strength of the matrix, the tensile properties were changed upon experimental conditions; the tensile strength was increased with magnesium content, whereas the elongation was increased in the reverse case. The increase of both of high cycle fatigue and low cycle fatigue lives with decreasing the secondary dendritic arm spacing is observed, mainly due to homogeneous deformation owing to the fine size of eutectic silicon and Fe intermetallic particles. The fatigue dynamometer of a diesel cylinder head shows the same tendency with the results of specimen fatigue tests with microstructures.

  Info
Periodical
Advanced Materials Research (Volumes 26-28)
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
111-114
DOI
10.4028/www.scientific.net/AMR.26-28.111
Citation
C. Y. Jeong, C. S. Kang, J. I. Cho, "Effect of Alloying Elements on Mechanical Properties for A356 Casting Alloy", Advanced Materials Research, Vols. 26-28, pp. 111-114, 2007
Online since
October 2007
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Price
$32.00
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