Multi-scale study on the electrochemical behavior and corrosion mechanism of 5083 aluminum alloy with different microstructures in a NaCl environment.

We conducted electrochemical experiments on 5083 aluminum alloy with different microstructures and measured the samples before and after corrosion by SEM and EBSD. At the same time, density functional theory was used to calculate the chloride ion adsorption behavior of the MgAl phase, which explained the corrosion mechanism on a multi-scale. The results indicated that edge and heart specimens with varying grain sizes exhibited different trends post heat treatment.