Superfine Ce Oxide-Induced Precipitation Behavior of Copper in Steel

6th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Li, Zhongyuan^1^2 ; Li, Changrong^1^2 ; Wang, Peng^1^2 ; Zhang, Shixin^1^2 ; Cheng, Longhai^1^2 ; Du, Wenhui^1^2

College of Materials and Metallurgy, Guizhou University, Guiyang

550025, China^1

Guizhou Province Key Laboratory for Metallurgical Engineering and Process Energy Saving, Guiyang

550025, China^2

关键词: Chemical composition analysis;    Copper precipitation;    Heterogeneous nucleation;    Precipitation behavior;    Residual copper;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/472/1/012037/pdf
DOI  :  10.1088/1757-899X/472/1/012037

来源: IOP

【 摘 要 】

Residual copper is gradually enriched in short steelmaking and produces copper crunch. To solve this problem, this study explores the influence of rare earth element Ce on copper precipitation behavior in steel. Chemical composition analysis, scanning electron microscopy, and EDS are used to characterize the phases. Results show that the inclusions MnS, Al2O3, Ce2O3, and Ce2O2S in steel play a role in inducing the heterogeneous nucleation and precipitation of copper elements. The amount of segregation at the grain boundaries is significantly reduced, and the inclusions remain in the matrix and are uniformly dispersed to reduce the copper crunch problem.