Effect of Carbon Content on the Probability of the Intragranular Ferrite Formation
2015 (English)In: Steel Research International, ISSN 1611-3683Article in journal (Refereed) Submitted
The effect of the carbon content on the probability of the intragranular ferrite (IGF) formation was investigated in the present work. The TiN inclusion was detected to be the effective nucleation site for the IGF formation in the Fe-0.2 mass.% C alloy and the Fe-0.4 mass.% C alloy. It is noted that the probability of the IGF formation for each inclusion size is decreased with the increase of carbon content. Moreover, the critical diameters of the TiN, TiO and VN inclusions in the steels with different carbon contents were calculated based on the classical nucleation theory. The calculated critical diameter was also found to be decreased with the increase of carbon content. This is in agreement with the experiment results. Finally, the decrease of the probability of IGF formation for each inclusion size is due to a larger amount of pearlite formation in the steel contains a higher carbon content, which was detected by differential scanning calorimetry (DSC) measurements.
Place, publisher, year, edition, pages
carbon content; intragranular ferrite (IGF); inclusion size; nucleation; differential scanning calorimetry (DSC).
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-162279OAI: oai:DiVA.org:kth-162279DiVA: diva2:797684
NQC 20152015-03-242015-03-242015-04-07Bibliographically approved