The study of corrosion behavior on steel containing 1% chromium

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• 作者：DONG XiaomingZHANG Zhonghua
• 会议时间：2013-06-01
• 关键词：low alloy steel ; SEM ; pitting corrosion
• 作者单位：DONG Xiaoming(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;Bar & Pipe Department,Research Institute,Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China)ZHANG Zhonghua(Bar & Pipe Department,Research Institute,Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China)
• 母体文献：第五届宝钢学术年会论文集
• 会议名称：第五届宝钢学术年会
• 会议地点：上海
• 主办单位：中国金属学会
• 语种：chi

摘要

Corrosion behaviour of low-alloy steel containing 1% Cr ( 1Cr) with normalized ( ferritic- pearlitic ) and quenched-and-tempered ( tempered martensitic ) microstructures was investigated in CO2 environments at 60℃.As compared to carbon steel N80,the severe localized corrosion disappears for low-alloy steel 1Cr due to the occurrence of the compact and self-repairable Cr-rich scale.For low-alloy steel,the corrosion resistance of 1Cr with ferritic-pearlitic microstructure is better than that of tempered martensitic microstructure.A severe corrosion scale spallation is obviously observed on the surface of quenched-and-tempered 1Cr,however,only slight scale spallation was observed for normalized ICr.