Ultra-Low Carbon High Strength Weathering Steels

Zhi Yong Liu; Xin Lai He; Shan Wu Yang; Qiang Xue Zhou

doi:10.4028/www.scientific.net/AMR.317-319.236

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Ultra-Low Carbon High Strength Weathering Steels
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 317-319Ultra-Low Carbon High Strength Weathering Steels

Ultra-Low Carbon High Strength Weathering Steels

Abstract:

The ultra-low carbon high strength weathering steel was trial manufactured. By Optical micrographs observation, scanning electronic microscope (SEM), transmission electronic microscope (TEM), accelerated corrosion test, the corrosion resistant performance of test steel and CortenB steel were studied. The results showed that yield strength, tensile strength, elongation and -40 °C impact energy of test steel reached 510MPa, 600MPa, 22% and 115J, respectively. Corrosion resistance of test steel was superior to that of CortenB. The microstructure of ferrite and bainite, quickly forming adhesive dense rust layers to improve the corrosion resistance of test steel.