Fig. 4From: Recrystallization-based formation of uniform fine-grained austenite structure before polymorphic transition in high-strength steels for Arctic applicationsMicrostructure F620 steel alloyed with V: а transformed from austenite exposed for 60 s at Т = 1200 °С, D γ = 120 μm; b austenite deformed with pauses regulated, D γ = 17 μm; c not regulated, D γ = 90 μm; and d microhardnessBack to article page