Effect of heat treatment on the sensitization of Alloy 182 weld

The effect of heat treatment on the sensitization behavior of Alloy 182 weld was explored by employing chemical and electrochemical evaluation techniques. The results showed that Alloy 182 weld heat treated at 650 °C for 24 h was susceptible to intergranular corrosion. Interdendritic corrosion was also observed when the weld was sensitized.