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Effect of the inclusion size and sulfur content on the intragraunlar ferrite transformation in steels with Ti2O3 additions
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Process Metallurgy.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2015 (English)In: Proceedings of the 6th International Congress on the Science and Technology of Steelmaking, ICS 2015, Chinese Society for Metals , 2015, 767-771 p.Conference paper (Refereed)
Abstract [en]

The effect of the inclusion size and the sulfur content on the intragranular ferrite (IGF) formation in steels with Ti2O3 additions was investigated. The nuclei inclusion is identified as a TiOx+MnS phase. TiOx was found to be the nucleation site for an intragranular ferrite formation. Also, the inclusion size increases from a range of 0.3 to 6.8μm to a range of 0.85 to 13.53μm after the addition of Ti2O3 powders into the molten steel. The probability of an IGF nucleation increases with an increased inclusion size. It is found that a 1.7μm inclusion size is large enough to be an effective nucleation site. It is also noted that the nucleation probability decreases with an increased sulfur content. The tendency of the probability of an IGF nucleation could fit the tendency of the area fraction of an IGF with an increased sulfur content.

Place, publisher, year, edition, pages
Chinese Society for Metals , 2015. 767-771 p.
Keyword [en]
Inclusion size, Intragranular ferrite, Phase transformation, Sulfur, Titanium oxide, Ferrite, Nucleation, Phase transitions, Probability, Steel foundry practice, Steelmaking, Area fraction, Ferrite transformation, Inclusion sizes, Intra-granular ferrites, Molten steel, Nucleation probabilities, Nucleation sites, Sulfur contents, Titanium oxides
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-194666ScopusID: 2-s2.0-84983112799OAI: oai:DiVA.org:kth-194666DiVA: diva2:1050578
Conference
6th International Congress on the Science and Technology of Steelmaking, ICS 2015, 12 May 2015 through 14 May 2015
Note

QC 20161129

Available from: 2016-11-29 Created: 2016-10-31 Last updated: 2016-11-29Bibliographically approved

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