Effects of Strain Energy and Grain Size on Corrosion Resistance of Ultrafine Grained Fe-20%Cr Steels with Extremely low C and N Fabricated by ECAP

Figure 12

Laser microscope showing pitting corrosion of (a) as-ECAPed, (b) annealed at 573 K, (c) 773 K.

(a)

(b)

(c)