Solid solution treatment with specimens of different medium cooling and then after aging treatment, the sample and then observed under the transmission electron microscope, can see all kinds of alloy sample distributed uniformly in the matrix with spherical particle zeta phase, observation can be seen in the water sample solution after aging precipitation of zeta phase number and mass more small, oil cooling sample time, air cooling and furnace cooling sample precipitation zeta phase are relatively few in number and thick. At the same time, furnace cooling specimen also found that a certain amount of zeta / beta precipitated phase. Courseware dissolution precipitation cooling speed effect of zeta phase. Because of fast cooling speed, then the quenching stress, quenching formed more wrong, for the time when the zeta phase inhomogeneous precipitation provided more nucleation sites. Moreover, due to the quenching cooling speed, so that the solid solution alloy substrate to maintain a high supersaturation, provide dynamic conditions for the zeta phase during aging precipitation. Therefore, the quenching speed is fast, the zeta phase precipitates after aging the large quantity and small dispersion. Because between the zeta phase and matrix exists potential difference, primary battery is formed in the electrolyte solution. The zeta phase of high electric potential, as the anode activation phase, the increase in the number of zeta phase, making the number of alloy Zhongyuan battery also increases, so the corrosion current increases, electrochemical corrosion resistance properties of lower alloy.