On the Sources of Non-Metallic Inclusions in Steel
(Room 205B)
10 May 17
8:30 AM
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9:00 AM
Tracks:
Kent D. Peaslee Memorial Session
In the most general terms, non-metallic inclusions in steel may be defined as separate non-metallic phase, contained within the iron-based matrix. However, the definition of non-metallic inclusions here will be restricted to particles that form either in the liquid steel or at/near the solid/liquid interface during solidification. Based on this operating definition, the focus of this review is restricted to oxide, sulfide and certain nitride inclusions (titanium nitrides). In most cases, these non-metallic inclusions, if large enough, are considered to be detrimental to the performance of the steel. Understanding the origins and generation mechanisms of the various types of non-metallic inclusions can be useful in controlling their respective populations in steel. The sources of these inclusion types are described based primarily on a review of relevant literature.