Fig. 2
From: Study on passivation mechanism of HRB500E rebar in highly alkaline concrete pore solution
Microstructure of HRB500E rebar. (a) Microstructure, (b) Pearlite morphology. Note: PF → Polygonal ferrite, LP → Lamellar pearlite, dPF → Ferrite grain size, dLP → Pearlite grain size, S0 → Cementite lamellae spacing.
