The corrosion and discharge behaviors of AZ91 magnesium alloy after hot rolling with different deformations (0%, 20%, 30%, and 40%) are systematically studied in this article. The results indicate that AZ91 without rolling deformation (0% rolling deformation) possesses the most outstanding corrosion resistance; at high current densities (40, 50 mA cm−2), the discharge activity of AZ91 after hot rolling with 20% deformation is optimal, while 0% rolling deformation shows the most excellent discharge activity at low current densities (5, 10 mA cm−2). Combined with the observation results of microstructure, it demonstrates that the corrosion resistance and discharge activity of AZ91 are closely related to the fragmentation of the second phase, the distribution of the second phase at the grain boundary, and the increase of the grain boundary after hot rolling.

No abstract

The effect of solution-treated on the self-corrosion performance and discharge performance of AZ91 magnesium alloy as anode material was analyzed by microscopic characterization, immersion tests, electrochemical measurements, and discharge performance tests. The study shows that the β-phase in the AZ91 magnesium alloy gradually dissolved in the matrix with the increase of the solution temperature, and the electrochemical activity of the magnesium alloy anode was significantly improved. Through the comparison of three different solution-treated processes, it is found that the AZ91 magnesium alloy has the most vigorous activity and better discharge performance after solution-treated of 415 o C+12 h. In addition, the proportion and distribution of β-phase AZ91 magnesium alloy have a direct impact on its discharge performance as an anode material.

No abstract