Study on Corrosion Resistance of 6082-T6 Aluminum Alloy Manufactured by Friction Stir Additive
6082-T6 aluminum alloy additive block was successfully obtained by FSAM technology in this paper,and its corrosion resistance was studied.The results show that the corrosion resistance of the additive is better than that of the base material by both spalling corrosion rating and static weight loss method.The potentiodynamic polarization curves and immersion corrosion test also show that the corrosion tendency and corrosion rate of the additive are lower than that of the base material,and the corrosion tendency and corrosion rate gradually decrease from the bottom up along the direction of the additive height.After FSAM,the coarse zonal grains of 6082-T6 aluminum alloy are transformed into fine equiaaxial grains,and the amount and distribution of Mg2Si phase are reduced and uniform,which are the main reasons for the corrosion resistance of the additive body is better than that of the base metal.
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