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Preparation of High-Nitrogen Ductile Iron by Injecting Nitrogen Gas in Molten Iron
2020
Materials
High-nitrogen ductile iron (DI) was prepared by a new method of injecting nitrogen gas into molten iron and nodularizing treatment. The microstructure and mechanical properties of the as-prepared DI for different nitrogen gas injection periods were characterized. The graphite morphology gradually deteriorated with the increase in the nitrogen gas injection time. The maximum nitrogen and pearlite contents were obtained after 20 min of nitrogen gas injection, and the corresponding tensile
doi:10.3390/ma13112508
pmid:32486402
fatcat:c4tnb7yiqzbsdoevz5vzxvfl4a