Detection of susceptibility to intergranular corrosion of aged super austenitic stainless steel S32654 by a modified electrochemical potentiokinetic reactivation method
Precipitation behavior of S32654 at nose temperature (1000 °C) is investigated. A modified DL-EPR method is established to detect IGC susceptibility of S32654. The degree of sensitization increases with aging time and no self-healing occurs. Cr-depleted zone and Mo-depleted zone are observed adjacent to the precipitates. The IGC of S32654 is caused by the Cr- and Mo-depleted zones.