The Influence of Humid Environment on Fatigue Property of Pre-Corroded 7XXX Aluminum Alloy
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 .
L. Hui et al., "The Influence of Humid Environment on Fatigue Property of Pre-Corroded 7XXX Aluminum Alloy", Advanced Materials Research, Vols. 314-316, pp. 1406-1410, 2011