Inclusion and Microstructure Characteristics in Steels with TiN Additions
(English)Manuscript (preprint) (Other academic)
The quantitative analysis of inclusion and microstructure characteristics in the steels with TiN additions has been studied. The typical inclusion was detected to be a TiN+Mn-Al-Si-Ti-O+MnS phase. This identification was based on the measurements of scanning electron microscopy with energy dispersive X-ray spectrometer (SEM-EDS), electron probe microanalysis (EPMA) which equipped wavelength dispersive X-Ray spectroscopy (WDS) and equilibrium calculations by using the commercial software Thermo-Calc.. TiN was found to be the effective nucleation site for the formation of intragranular ferrite (IGF). Furthermore, the increased inclusion size led to the increased probability of IGF nucleation, and this probability of IGF nucleation was slightly decreased with the increased sulfur content. This tendency is in agreement with the tendency of the area fraction of IGF in the steels containing different sulfur contents.
intragranular ferrite; titanium nitride; inclusion size; nucleation; sulfur
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-162275OAI: oai:DiVA.org:kth-162275DiVA: diva2:797677
QS 20152015-03-242015-03-242015-03-25Bibliographically approved