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Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

2019

Missouri University of Science and Technology

Doctoral Dissertations

Metallurgy

Steelmaking

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Oxide Inclusion Evolution And Factors That Influence Their Size And Morphology, Obinna M. Adaba Jan 2019

Oxide Inclusion Evolution And Factors That Influence Their Size And Morphology, Obinna M. Adaba

Doctoral Dissertations

"The evolution of oxide inclusion size distribution and the shape of the distribution during steelmaking and casting and the process variables that influence the inclusion characteristics at different stages were investigated and documented. A statistical method for transforming the 2D size distribution to their actual 3D distributions and the application of a kinetic model to determine nucleation and growth mechanisms were tested. Finally, laboratory experiments were performed to study the effects of preexisting inclusions, steel active oxygen content, and supersaturation on the size and morphology of Al2O3 inclusions.

The inclusion size, composition, and morphology following steel deoxidation …