Home HOME Kovove Materialy-Metallic Materials 2015 Metallic Materials Vol. 53 (2015), no. 1, pp.35-41

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Metallic Materials Vol. 53 (2015), no. 1, pp.35-41

Title: Modeling of solute segregation and the formation of non-metallic inclusions during solidification of a titanium-containing steel
Author: D. KALISZ, P. L. ŹAK
Abstract: Solute segregation and formation of non-metallic inclusions during the solidification of a titanium-containing steel are modeled in this paper. The Ueshima model was used to describe the partitioning of solute elements in the steel, taking account of back-diffusion into the solid. Calculations were made for solidification of an AH-36-3u steel ingot cooled at 50 or 100 K min−1. The simulations reveal that MnS inclusions are formed first, followed by TiN, Ti2O3 and SiO2. Increased cooling rate accelerates the formation of non-metallic inclusions, but for the assumed rates of 50 and 100 K min−1 the differences in amount formed are minimal. The results of these calculations for AH-36-3u steel give an approximate picture of the distribution of inclusions in the solidified ingot structure.
Keywords: segregation, ingot solidification, non-metallic inclusions, back-diffusion
Published online: 16-Jan-2016
Year: 2015, Volume: 53, Issue: 1 Page From: 35, Page To: 41
doi:10.4149/km_2015_1_35


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