The Influence of Humid Environment on Fatigue Property of Pre-Corroded 7XXX Aluminum Alloy

Abstract:

The influence of humid environment on fatigue property of pre-corroded 7XXX aluminum alloy were investigated by means of fatigue and staircase experiments (Kt=1 and Kt=3). The results showed that humid environment significantly reduces both fatigue life and strength with the influence-factor of 0.7339(Kt=1), 0.8603(Kt=3) and 0.973(Kt=1), 0.971(Kt=3), respectively. The humid environment enlarges the dispersivity of fatigue life. As a consequence, an unconservative results on prediction of the fatigue life with high reliability of 99.9% will be obtained, based on the corrosion-influence-factor reached from eigenvalue or mean value .

• Periodical: Advanced Materials Research (Volumes 314-316)
• Pages: 1406-1410
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.314-316.1406
• Online since: August 2011
• Authors: Li Hui, Song Zhou, Liang Xu, Shao Hua Ma, Yan Wang, Ying Ying Zhang
• Keywords: Aluminium Alloy, Corrosion Fatigue, Fatigue, Humid Environment, Pre-Corrosion

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