D. V. Rutskii, N. A. Zyuban, M. V. Kirilichev, M. S. Nikitin, M. Yu. Chubukov
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引用次数: 0
Abstract
The features of the distribution of nonmetallic inclusions (NIs) along the cross-section of the 360 × 360-mm continuous cast billet (CCB) made of C45E steel are considered. Due to the high sulfur content in C45E steel, the proportion of sulfide inclusions is 54% and of oxysulfide inclusions, 35%. NIs are nonuniformly distributed along the CCB cross-section. High content of refractory oxide (refractory calcium aluminates CaO⋅Al2O3 and spinels MgO⋅Al2O3) and oxysulfide NIs has been found in the surface layer of small differently oriented crystals, which is associated with the formation of oxide inclusions at the stage of melting, in the shell of which CaS/MnS sulfides are formed. Further solidification of the CCB leads to a decrease in the content of oxysulfide inclusions along the cross-section of the billet due to their movement to the axial zone, where the number of sulfide inclusions increases.
期刊介绍：
Steel in Translation is a journal that represents a selection of translated articles from two Russian metallurgical journals: Stal’ and Izvestiya Vysshikh Uchebnykh Zavedenii. Chernaya Metallurgiya . Steel in Translation covers new developments in blast furnaces, steelmaking, rolled products, tubes, and metal manufacturing as well as unconventional methods of metallurgy and conservation of resources. Papers in materials science and relevant commercial applications make up a considerable portion of the journal’s contents. There is an emphasis on metal quality and cost effectiveness of metal production and treatment.
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