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- W2348315087 abstract "In the continuous casting process,corner cracks frequently occur in hypo-peritectic steel,which seriously affects slab quality and the continuous casting logistics.Samples were taken from the narrow face of continuously cast slab and tensile tests were made at different temperatures.Based on the steel's chemical composition,the high ratio of Mn to S,the low ratio of Mn to S and the trace magnesium treatment at the low ratio of Mn to S were controlled in the laboratory.The high temperature tensile samples were taken from ingot and high temperature tensile experiment results were compared.The samples' cross necking percentage at each temperature point was measured.Fractures were inspected and metallographic analysis were made to observe the inclusion morphology.It was found that the low ductility occurred from 800℃ to 860℃ and this caused corner cracks of slab during the straightening process.It was MnS inclusion that decreased the intensity of the primary ferrite phase on austenitic grain boundaries.By controlling the MnS morphology,especially through the magnesium treatment,MnS inclusions were refined and spheroidized,which effectively improve the steel's high temperature ductility within the temperature range.Now the experiment results have been applied to Baosteel's continuous casting production.This technology effectively controls the corner cracks and helps realize the hot delivering." @default.
- W2348315087 created "2016-06-24" @default.
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- W2348315087 date "2011-01-01" @default.
- W2348315087 modified "2023-09-25" @default.
- W2348315087 title "Experimental study on controlling of MnS morphology to improve hot ductility of hypo-peritectic steel" @default.
- W2348315087 hasPublicationYear "2011" @default.
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