Influences of stress amplitude on the transient current behavior during corrosion fatigue for LY12CZ aluminum alloy in 3.5% NaCl at constant potential under the load control condition have been studied. The results indicated that as the cycling processed the transient current amplitude the number of the current peak will change, which could provide valuable information of the damage at different stages of corrosion fatigue. At the high stress amplitude there are two current peaks in each fatigue cycle during the whole cycling. However at the low stress amplitude there is only one current peak ...