Microstructure evolution and precipitation behavior of low carbon steel hot strips produced by CSP  

作　　者：YonglinKang KeluWang HaoYu JieFu DeluLiu ZhongbingWang XuewenChen 

机构地区：[1]MaterialsScienceandEngineeringSchool,UniversityofScienceandTechnologyBeijing,Beijing100083,China [2]MetallurgicalandEcologicalEngineeringSchool,UniversityofScienceandTechnologyBelling,Belling1000153,China [3]GuangzhouZhujiangSteelCo.Ltd.,Guangzhou510620,China

出　　处：《Journal of University of Science and Technology Beijing》2004年第4期364-367,共4页北京科技大学学报（英文版）

基　　金：This work was financially supported by the "973" Key Foundation of China (No. GJ998061500)

摘　　要：The microstructures of low carbon steel before, during and after rollingdeformation of each stand were observed using optical microscope. The result showed that themicrostructures were very fine after six passes rolling deformation. The effect of the first standreduction on microstructure refinement was very distinct. During the rolling process, with theincrease of the accumulated strain, the microstructures would further refine, and the density ofdislocation would increase at the same time. In continuous casting thin slabs and each finishingstand, lots of observed precipitates were mainly A1_2O_3 and MnS along the grain boundaries or ingrains, which played an important role in the mechanical properties of the hot strips of low carbonsteel produced by CSP (compact strip production) technology.The microstructures of low carbon steel before, during and after rollingdeformation of each stand were observed using optical microscope. The result showed that themicrostructures were very fine after six passes rolling deformation. The effect of the first standreduction on microstructure refinement was very distinct. During the rolling process, with theincrease of the accumulated strain, the microstructures would further refine, and the density ofdislocation would increase at the same time. In continuous casting thin slabs and each finishingstand, lots of observed precipitates were mainly A1_2O_3 and MnS along the grain boundaries or ingrains, which played an important role in the mechanical properties of the hot strips of low carbonsteel produced by CSP (compact strip production) technology.

关 键 词：CSP microstructure REFINEMENT precipitation mechanical property 

分 类 号：TG335.56[金属学及工艺—金属压力加工]