Abstract
The voltage potential corrosion effect of aged 5xxx series 5D86 Al alloy were investigated using Open Circuit Potential (OCP). The 5D86 Al alloy were heat treated to 600 °C and soaked in 4 hours time and immediate quenched into iced cold water. Then the heat treated samples were aged at five different temperatures for 4 hours and quenched into iced cold water. Temperatures used to aged 5D86 Al alloy is 150 °C, 250 °C, 350 °C, 450 °C and 550 °C. The phases of AlxMgy were investigated using XRD. The hardness of these materials was investigated and studied using Vickers microhardness. The corrosion behavior of 5D86 Al alloys was investigated using Open Circuit Potential (OCP) testing. Solution used for OCP testing is 3.5% NaCl for 120 min with 10 mm2 surface area. The voltage potential of 5D86 Al alloys aged at 250 °C was nearing positive value which means the corrosion rate of aged sample at 250 °C have the higher rate corrosion resistance.
Published Version
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