Oxide and Sulfide Dispersive Precipitation and Effects on Microstructure and Properties of Low Carbon Steels  

作　　者：DeluLIU ZhongbingWANG 等 

机构地区：[1]UniversityofScienceandTechnologyBeijing,Beijing100083,China [2]GuangzhouZhujiangSteelCo.Ltd,Guangzhou510730,China

出　　处：《Journal of Materials Science & Technology》2002年第1期7-9,共3页材料科学技术（英文版）

摘　　要：Electron microscopic investigation on low carbon steel strips produced by the CSP process has been carried out. Large number of oxide dispersive precipitates have been observed in the ferrite matrix of the steel strips. Dimension of them is about 10~20 nm. Electron diffraction study showed that the structure of these precipitates consists with cubic system spinel structure. Their lattice parameter is about 0.83 nm. The results implied that they should be complex oxides of Fe, Al et al. Small sulfide particles with 100-300 nm in size have also been observed. Remarkable strengthening and grain refinement effects can be obtained by the precipitations. The oxygen and sulfur in steels could play beneficial role under certain conditions.Electron microscopic investigation on low carbon steel strips produced by the CSP process has been carried out. Large number of oxide dispersive precipitates have been observed in the ferrite matrix of the steel strips. Dimension of them is about 10~20 nm. Electron diffraction study showed that the structure of these precipitates consists with cubic system spinel structure. Their lattice parameter is about 0.83 nm. The results implied that they should be complex oxides of Fe, Al et al. Small sulfide particles with 100-300 nm in size have also been observed. Remarkable strengthening and grain refinement effects can be obtained by the precipitations. The oxygen and sulfur in steels could play beneficial role under certain conditions.

关 键 词：Low carbon steel CSP Spinel structure 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG142.31[金属学及工艺—金属材料]