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Prediction of intragranular ferrite nucleation from TiO, TiN, and VN inclusions
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.ORCID-id: 0000-0003-0533-6729
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.
2016 (engelsk)Inngår i: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, Vol. 51, nr 4, s. 2168-2180Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

The current study presents a method to calculate the critical diameters of TiO, TiN, and VN inclusions for intragranular ferrite (IGF) nucleation in steels. Based on the calculation results, it was noted that the critical diameters of TiO, TiN, and VN inclusions for IGF nucleation were 0.192, 0.355, and 0.810 μm. The calculation results agreed with the experiment data of a minimum inclusion size for IGF nucleation in the actual steel samples. Moreover, the effects of Mn, C, and S contents on the critical diameters of inclusions were investigated. It was found that the critical diameters of TiO, TiN, and VN inclusions increased with the increasing Mn and C contents. In addition, it was found that S does not have a direct effect on the critical diameters of TiO, TiN, and VN inclusions. However, the increasing S content led to an increased amount of MnS precipitation in the actual steels. This is negative, since MnS is ineffective nucleation site for IGF nucleation. When the amount of MnS increases in steels, the area fraction of IGF slightly decreases. This fact has been investigated by in situ observation experiments.

sted, utgiver, år, opplag, sider
Springer-Verlag New York, 2016. Vol. 51, nr 4, s. 2168-2180
Emneord [en]
C-MN STEEL, HEAT-AFFECTED ZONE, LOW-ALLOY STEEL, ACICULAR FERRITE, NONMETALLIC INCLUSIONS, MICROSTRUCTURE CONTROL, INTERFACIAL ENERGY, SULFUR-CONTENT, WELD METALS, OXIDE
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URN: urn:nbn:se:kth:diva-180938DOI: 10.1007/s10853-015-9527-6ISI: 000367647100050Scopus ID: 2-s2.0-84953359525OAI: oai:DiVA.org:kth-180938DiVA, id: diva2:897595
Merknad

QC 20160126. QC 20160205

Tilgjengelig fra: 2016-01-26 Laget: 2016-01-25 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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