Macrosegregation Characteristics of Ferrite and Austenite Stabilizer Elements in Large Size High Strength Steel Ingot

Abstract:

In the present work, the segregation degrees of ferrite and austenite stabilizer alloying elements were analyzed for a high strength steel. For this, samples were taken from the surface and center of the hot-top and the upper section of a 40 MT ingot. The results showed that the positive segregation ratios for all the investigated elements were higher in the ingot center than in the surface with higher values for austenite stabilizer elements. The increase of austenite alloying element stabilizers was accompanied by the change in the primary solidification mode of the austenite phase. The obtained results are in good agreement with the observed presence of austenite, revealed by X-ray diffraction analysis, stabilized by the austenite alloying elements.

• Periodical: Key Engineering Materials (Volume 846)
• Pages: 82-86
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.846.82
• Online since: June 2020
• Authors: Abdelhalim Loucif*, Chunping Zhang, Mohammad Jahazi, Louis Philippe Lapierre-Boire
• Keywords: Austenite, Ferrite, Ingot, Macrosegregation, Stabilizer Elements

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