Determination of Susceptibility to Intergranular Corrosion of UNS 31803 Type Duplex Stainless Steel by Electrochemical Reactivation Method: A Comparative Study
Figure 5
Corroded area of the aged specimen at 800°C/31622 min after the standard immersion test for 24 hours. (a) Large initiated areas of localized corrosion (black) and big cavities are formed. (b) The corrosion propagates within the secondary austenite (slightly etched with oxalic acid) adjacent to the sigma phase.
