Three-dimensional study of inclusion morphology and size distribution in Mn-Si killed steel

Obinna M. Adaba, Ronald J. O'Malley, Mingzhi Xu, Laura N. Bartlett, Simon N. Lekakh

Research output: Contribution to book or proceedingConference articlepeer-review

2 Scopus citations

Abstract

Inclusion size distribution and shape are typically determined from the analysis of a polished cross-section of steel specimen. However, measured inclusion characteristics such as the 2D size distribution and shape can differ from the actual 3D characteristics that influence the mechanical properties of steel. In this study, MnO·SiO2 inclusions that were liquid at steelmaking temperatures have been extracted from a Mn-Si killed steel using an electrochemical dissolution method. Automated SEM/EDX analysis was used to perform a direct comparison of the inclusions observed in the 2D polished section and in 3D by analyzing extracted inclusions collected on a filter. A spherical inclusion shape was assumed and used to perform the statistical conversion of the measured 2D particles to a virtual 3D particle size distribution and the predicted distribution was compared to the measured 3D distribution. The causes of the departure of the real 3D inclusion statistics from the converted 2D data are discussed.

Original languageEnglish
Title of host publicationAISTech 2018 Proceedings - Iron and Steel Technology Conference and Exposition
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages2591-2600
Number of pages10
ISBN (Electronic)9781935117728
StatePublished - 2018
EventAISTech 2018 Iron and Steel Technology Conference and Exposition - Philadelphia, United States
Duration: May 7 2018May 10 2018

Publication series

NameAISTech - Iron and Steel Technology Conference Proceedings
Volume2018-May
ISSN (Print)1551-6997

Conference

ConferenceAISTech 2018 Iron and Steel Technology Conference and Exposition
Country/TerritoryUnited States
CityPhiladelphia
Period05/7/1805/10/18

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