Anodized treatment

[nalves]

Can an anodizing treatment of a an aluminum part (upright from a formula car) that has been manufactured using among others, TIG welding (base alloy 6082-T6; filler alloy 5356), increase the fatigue strength of the component?
What thickness should I use?

thanks in advance.

 

[swall]

In my experience (aircraft wheels),sulfuric acid anodizing will reduce fatigue life. Chromic acid anodizing, which is about one tenth the thickness will have a minimal effect on fatigue life. If you need improved fatigue life, you need to look at shot peening. `