Effect of end milling, grinding and tartaric-sulfuric anodizing on the fatigue behavior of AA7050 alloy

The present study investigates the effect of high-speed milling (HSM), grinding and anodizing processes on high cycle fatigue strength AA7050 aluminum alloy. These are systematically applied to certain aircraft components as specified by aeronautical standards, attain a good surface finish. In order understand each process strength, vast experimental campaign consisting fully reversed plane bending tests has been conducted specimens with different states. A polished batch, three milled batches roughness, grinded batch two then anodized roughness have tested. results show that must be highly degraded (Sa > 3 $$\mu m$$ ) in impact strength. It is also shown slight beneficial domain studied. dependence via parameter $$\sqrt{Sa}$$ , previously proposed authors.