Corrosion fatigue tests were performed on three cast aluminium alloys in engine coolant
using a revolving bending test apparatus. A decrease in the bearable load is detected for the
tests under corrosive conditions compared to standard fatigue testing in air. The surface
condition of the test specimens showed a remarkable influence, whereby specimens with a
machined surface failed earlier than those with as-cast surface condition. Electrochemical
noise measurements could be used to detect the early stages of failure.