Fig. 11

Corrosion morphology of 2205–3 DSS (1.2 YS) wire after 524 days exposure: a a localised corrosion site with b–c showing transgranular SCC, d an elongated localised corrosion site with e–f showing the selective dissolution of either the ferrite or austenite within these sites. Narrow SCC cracks were observed at the bottom of those sites, g–h indicating corrosion by selective attack, i showing a corrosion pit with no sign of selective corrosion. a–e, g–i BSE-SEM images and f SE-SEM image