Effect of anodization and loading on fatigue life of 2618-T851 aluminum alloy

Anodizing process is largely performed on aluminum alloys to enhance corrosion and wear resistances. However, this can significantly reduce the fatigue resistance of depending alloy parameters. This paper deals with influence anodizing aeronautical 2618-T851. The anodic film has been characterized after each step using scanning electron microscopy (SEM). analysis showed that layer was crazed just impregnation operation micro-cracks extending from surface up half layer. Simultaneously, uniaxial tests under tension or torsion loadings have conducted in order evaluate effect relation loading nature. results a detrimental life 2618 when specimens are subjected tensile loading. no Fractographic observations get an insight mechanisms involved case.