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Effect of Microstructure on Corrosion Fatigue Behavior of 1500 MPa Level CarbideFree Bainite/Martensite DualPhase High Strength Steel

XU Lei , WEI Dongyuan , YU Yang , ZHANG Han , BAI Bingzhe

钢铁研究学报(英文版)

Influence of microstructure of the experimental steels on the corrosion fatigue behavior in 35% of NaCl aqueous solution was studied. Experimental results show that compared with the full martensite (FM) steel, the carbidefree bainite/martensite (CFB/M) steel has higher corrosion fatigue strength and corrosion fatigue crack threshold (ΔKthcf), and lower corrosion crack propagation rate [(da/dN)cf].

关键词: high strength steel; carbidefree bainite/martensite dualphase steel; corrosion fatigue