Relationship between microstructure and corrosion behavior of high-grade pipeline steel in a low-temperature environment
在微观结构和在低温度的环境的高级管道钢的腐蚀行为之间的关系作者机构：School of Oil and Gas EngineeringSouthwest Petroleum UniversityChengdu 610500SichuanChina Department of Structural SteelsCentral Iron and Steel Research InstituteBeijing 100081China State Key Laboratory of Metal Material for Marine Equipment and Application of Iron and Steel Research Institutes of Ansteel Group CorporationAnshan 114009LiaoningChina
出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)
年 卷 期：2021年第28卷第8期
页 面：1037-1046页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：supported by the National Key Research and Development Program of China(Grant No.2017YFB0304900) the National Natural Science Foundation of China(Grant No.51911530129)
主 题：Low temperature High-grade pipeline steel Corrosion behavior Resistance Acicular ferrite Granular bainite Martensite/austenite constituent
摘 要：The relationship between micro structure and corrosion behavior of high-grade pipeline steel under low-temperature conditions was comparatively investigated by the potentiodynamic polarization and electrochemical impedance spec-troscopy test combining with optical micrographs,scanning electron microscopy,transmission electron microscopy and electron back-scattered *** results showed that,compared with room and high temperature,low temperature could influence the corrosion behavior of high-grade pipeline steel,which means that the corrosion potential and current density decreased and the corrosion resistance increased ***,double layer structures of the interface became thicker and more *** low-temperature environment,acicular ferrite had the martensite/austenite constituents with less amount and smaller size,a higher density of low angle grain boundaries and smaller effective grain sizes compared with granular bainite,which demonstrated higher corrosion resistance.
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