Effect of Fatigue Damage Under Stress-controlled Mode on the Corrosion Behavior of AA7075-T651 Al-alloy
The effect of fatigue damage under stress-controlled mode on mechanical properties and corrosion behavior of AA7075-T651 Al-alloy was systematically investigated through the interrupted fa-tigue test,tensile test,electrochemical measurement and microstructure observation.The results show that the acquired fatigue damages can not only improve the comprehensive mechanical properties of AA7075 Al-alloy,but also increase its corrosion resistance.It follows that the change of microstructure(the increase of dislocation density and secondary phase precipitation)before and after being experi-enced fatigue damages is the fundamental reason that affects the mechanical properties and corrosion behavior of AA7075 Al-alloy.
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