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Journal of the Southern African Institute of Mining and Metallurgy
On-line version ISSN 2411-9717
Print version ISSN 2225-6253
Abstract
KACAR, Y.; KRUGER, D. and PISTORIUS, P.C.. Evolution of oxide and nitride inclusions during processing of stainless steel. J. S. Afr. Inst. Min. Metall. [online]. 2021, vol.121, n.8, pp.379-384. ISSN 2411-9717. http://dx.doi.org/10.17159/2411-9717/923/2021.
Because of its superior properties, stainless steel has been widely used for many applications. Nonmetallic inclusions can influence the quality of stainless steel products. A set of samples was used to track the response of inclusion composition during processing of a heat of titanium-bearing 18% chromium steel, from deoxidation after decarburization, to the solidified slab. The oxide inclusions responded as expected to additions of deoxidizers and calcium treatment, changing from silica to alumina and spinels, and then to calcium aluminates. The samples confirmed that titanium nitride can nucleate on liquid calcium aluminate during steel solidification.
Keywords : stainless steel; inclusion; oxides; titanium nitride precipitation; solidification.