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Oxide and Sulfide Dispersive Precipitation and Effects on Microstructure and Properties of Low Carbon Steels 被引量:29
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作者 DeluLIU ZhongbingWANG 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2002年第1期7-9,共3页
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 strip... 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. 展开更多
关键词 Low carbon steel CSP Spinel structure
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Quantitative analysis on strengthening mechanism of ultra-thin hot strip of low carbon steel produced by CSP technique 被引量:8
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作者 HaoYu YonglinKang +4 位作者 XueyingXiong KeluWang JieFu GuijiangChen LiejunLi 《Journal of University of Science and Technology Beijing》 CSCD 2004年第5期425-427,共3页
Based on experimental data of positron annihilation technology, electrolyticdissolution technique, electron back-scattered pattern, etc. and by analysis the strengtheningfactors, the strengthening mechanism of ultra-t... Based on experimental data of positron annihilation technology, electrolyticdissolution technique, electron back-scattered pattern, etc. and by analysis the strengtheningfactors, the strengthening mechanism of ultra-thin hot strip of low carbon steel produced by CSP(Compact Strip Production) technique was investigated. The value of each strengthening mechanism andits contribution percentage to yield strength were achieved. The results show that refinementstrengthening is the predominant strengthening mode; precipitation strengthening and dislocationstrengthening are second to it, their contributions to yield strength are almost equal. 展开更多
关键词 CSP positron annihilation technology electrolytic dissolution technique electron back-scattered pattern strengthening mechanism hot strip
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Microstructure evolution and precipitation behavior of low carbon steel hot strips produced by CSP 被引量:3
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作者 YonglinKang KeluWang +4 位作者 HaoYu JieFu DeluLiu ZhongbingWang XuewenChen 《Journal of University of Science and Technology Beijing》 CSCD 2004年第4期364-367,共4页
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 rolli... 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. 展开更多
关键词 CSP microstructure REFINEMENT precipitation mechanical property
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Metallurgical quality of CSP thin slabs
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作者 DeguangZhou JieFu +3 位作者 YonglinKang ZhongbingWang: JingLi ZhongboXu 《Journal of University of Science and Technology Beijing》 CSCD 2004年第2期106-109,共4页
The casting structure, chemical composition segregation, dendrite arm space,inclusiona and during the CSP (compact strip production) rolling process were investigated. Theresults show that the CSP thin slab has a feat... The casting structure, chemical composition segregation, dendrite arm space,inclusiona and during the CSP (compact strip production) rolling process were investigated. Theresults show that the CSP thin slab has a feature of uniform fine grains, more columnar crystals,less central porosity and segregation etc. There is no great difference in macrostructure betweenthe CSP thin slab and conventional slab; however, the fine dendrite structure of the CSP slab ismore uniform. Moreover, the central porosity and segregation are obviously improved after the firstpass; and the dendrite is bent along the rolling direction rather than broken into pieces. Smallinclusions with the diameter less than 10 mum in the CSP slab are dominantly consisted of aluminatesformed by Al deoxidation and Ca treatment and not floating out of the melt. The large sizeinclusions found in the continuous casting slab are very few. 展开更多
关键词 CSP casting structure SEGREGATION dendrite arm space INCLUSION
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