抄録
We investigated the effect of stress on the electrochemical property of high pressure die cast aluminum alloy in sodium chloride solution at room temperature. As an electrochemical property, the polarization curve was measured under the constant tensile stress. Since the polarization curve depends on the metallographic structure of the specimen surface, the casting skin and mirror-polished surface were individually examined. To evaluate the effect of the stress, the four levels of stress were employed under the proof stress. The results showed that the spontaneous potentials of polished surface were lower than that of casting skin regardless of the level of applied stress. Moreover, the spontaneous potential tended to decrease, as the applied stress increased under the proof stress.
