رفتار خوردگی-خستگی آلیاژ آلومینیوم 7075-T651 تحت بارگذاری های متناوب

Corrosion-fatigue behaviour of 7075-T651 aluminum

alloy subjected to periodic overloads

رفتار خوردگی-خستگی آلیاژ آلومینیوم 7075-T651  تحت بارگذاری های متناوب

ABSTRACT

The corrosion-fatigue behaviour of 7075-T651 aluminum alloy subjected to periodic overloads was examined. This aluminum alloy is typically used in aerospace structural components such as the wing spars of aircraft. Axial fatigue specimens were subjected to a loading spectrum that consisted of a fully reversed periodic overload of near-yield magnitude followed by 200 smaller cycles at high Rratio. The specimens were fatigue tested while they were fully immersed in an aerated and recirculated 3.5 wt% NaCl simulated seawater solution.