Paper Title:
Effects of a Small Addition of Cu or Ge on the Microstructure and Mechanical Property of an Al-Si Alloy
  Abstract

In this study, we investigated the effects of a small addition of Cu (0.1%) or Ge (0.1%) on the microstructure and mechanical property of Al-Si alloys. The results are as follows. The size of precipitates in the Cu-added or Ge-added alloys is smaller than that in the binary alloy. The size of the precipitates at the grain boundary in the Cu-added or Ge-added alloys is larger than the size of the precipitates in the binary alloy. However, the number of the precipitates at the grain boundary in the Cu-added and Ge-added alloys is smaller than that in the binary alloy. It was found that a small addition of Cu or Ge has the effect of raising the fatigue strength under repeated tensile loading as well as the tensile strength.

  Info
Periodical
Materials Science Forum (Volumes 519-521)
Edited by
W.J. Poole, M.A. Wells and D.J. Lloyd
Pages
425-430
DOI
10.4028/www.scientific.net/MSF.519-521.425
Citation
K. Nakagawa, T. Kanadani, K. Nakayama, A. Sakakibara, "Effects of a Small Addition of Cu or Ge on the Microstructure and Mechanical Property of an Al-Si Alloy", Materials Science Forum, Vols. 519-521, pp. 425-430, 2006
Online since
July 2006
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