Formation mechanism of oxide-sulfide complex inclusions in high-sulfur containing steel melts
- Title
- Formation mechanism of oxide-sulfide complex inclusions in high-sulfur containing steel melts
- Author
- 박주현
- Keywords
- FERRITIC STAINLESS-STEEL; LOW-ALLOY STEEL; SOLIDIFICATION STRUCTURE; MOLTEN STEEL; NONMETALLIC INCLUSIONS; CALCIUM TREATMENT; MGAL2O4 SPINEL; SLAG; EVOLUTION; ALUMINUM
- Issue Date
- 2018-02
- Publisher
- SPRINGER
- Citation
- METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, v. 49, No. 1, Page. 311-324
- Abstract
- The [S] content in resulfurized steel is controlled in the range of 200 to 800 ppm to ensure good machinability and workability. It is well known that "MgAl2O4(spinel)+CaS" complex inclusions are formed in molten steel during the ladle refining process, and these cause nozzle clogging during continuous casting. Thus, in the present study, the "Refractory-Slag-Metal-Inclusions (ReSMI)" multiphase reaction model was employed in conjunction with experiments to investigate the influence of slag composition and [S] content in the steel on the formation of oxide-sulfide complex inclusions. The critical [S] and [Al] contents necessary for the precipitation of CaS in the CaO-Al2O3-MgO-SiO2 (CAMS) oxide inclusions were predicted from the composition of the liquid inclusions, as observed by scanning electron microscopy-electron dispersive spectrometry (SEM-EDS) and calculated using the ReSMI multiphase reaction model. The critical [S] content increases with increasing content of SiO2 in the slag at a given [Al] content. Formation mechanisms for spinel+CaS and spinel+MnS complex inclusions were also proposed. (C) The Minerals, Metals & Materials Society and ASM International 2017
- URI
- https://link.springer.com/article/10.1007/s11663-017-1152-0https://repository.hanyang.ac.kr/handle/20.500.11754/80938
- ISSN
- 1073-5615
- DOI
- 10.1007/s11663-017-1152-0
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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