Paper Title:
A Study on the Corrosion Fatigue Characteristics of Al 2024-T3 Alloy
  Abstract

In order to investigate how the corrosion dramatically reduces fatigue resistance of a 2024-T3 aluminium alloy, a series of corrosion experiments in a 3.5 wt% NaCl solution with different steeping time, and subsequent fatigue experiments under uniaxial cyclic load have been performed with the laminate specimens. The nucleation and growth of corrosion pits are found to occur mainly at the grain boundary. The optical micrographs of the experiments show that the fatigue micro-crack initiates on the bottom of the pit, expands its way through the neighbouring pits that located at the slip direction and then forms a main fatigue crack that leads to fracture. The similar corrosion experiments are also performed at different solution temperatures: 22 °C, 40°C, 60°C, and 80°C respectively. The effects of the steeping time and solution temperature on the fatigue life are investigated.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
1343-1348
DOI
10.4028/www.scientific.net/KEM.261-263.1343
Citation
R. C. Duan, H. J. Shi, "A Study on the Corrosion Fatigue Characteristics of Al 2024-T3 Alloy", Key Engineering Materials, Vols. 261-263, pp. 1343-1348, 2004
Online since
April 2004
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Price
$32.00
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