Stationary shoulder friction stir processing (SSFSP) in thick AZ31B magnesium alloy was performed to refine the microstructure followed by evaluating corrosion behavior. The use of stationary exhibited low heat input and small temperature gradient across thickness zone (SZ). Moreover, smooth surface morphology with little flash obtained. probe-dominated SZ developed fine equiaxed uniform grain ...

In the present work, a flash-PEO coating is developed on AZ31B alloy in combination of silicate, phosphate, and fluoride based electrolyte order to offer green alternative chromate conversion coatings. Multilevel active protection achieved through synergetic self-sealing effect PEO itself inhibition provided by an organic inhibitor impregnated pores post-treatment step. The results indicate tha...