Correlation of surface features with corrosion behaviors of interstitial free steel processed by temper rolling

作     者：Heng Chen Zebang He Lin Lu Heng Chen;Zebang He;Lin Lu

作者机构：Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing100083China State Key Laboratory of Metal Material for Marine Equipment and ApplicationAnshan114000China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2020年第36卷第1期

页      面：37-44页

核心收录：

学科分类：080503[工学-材料加工工程] 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）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：financially supported by the National Key Research and Development Program of China(No.2018YFB0605502) National Natural Science Foundation of China(No.U1560104) the State Key Laboratory of Metal Material for Marine Equipment and Application and National Environmental Corrosion Platform(NECP) 

主　　题：Temper rolling Surface feature Corrosion behavior Interstitial-free steel 

摘      要：Temper rolling,as a final manufacturing procedure,brings the change of surface features and hence affects the corrosion behaviors of interstitial-free(IF)*** study investigates changes in residual stress,microstructure,and surface topography of IF steel using X-ray diffraction,electron backscatter diffraction,and optical interferometric *** the synthetic influence of surface features on the corrosion process of the steel was evaluated by damp heat tests and electrochemical *** showed that low tensile and compressive residual stresses are introduced to the surface of the IF *** grains had a grain orientation spread(GOS)value greater than 0.50 after temper ***,temper rolling caused a slight change in the surface profile of the IF *** compressive residual stress had an overwhelming role at the macroscopic level,in retarding the corrosion evolution process of IF steel,as well as in decreasing the average corrosion *** corrosion was more likely to initiate and propagate in matrices with a high GOS value,which played the determinant role at the microscopic ***,the depth of valley in the surface profile could affect the diffusion process involved in the electrode reactions,which was more likely to exert an extra influence on the corrosion rate of IF steel.