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The Influence of Peritectic Reaction/Transformation on Crack Susceptibility in the Continuous Casting of Steels
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.ORCID iD: 0000-0001-9437-3550
KTH, School of Engineering Sciences (SCI), Centres, Faxén Laboratory. KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.ORCID iD: 0000-0002-8318-1251
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Casting of Metals.ORCID iD: 0000-0003-2449-9232
2017 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 48, no 3, p. 1625-1635Article in journal (Refereed) Published
Abstract [en]

The work presented here examines the surface cracks that can form during the continuous casting of near peritectic steels due to the volume changes during the peritectic reaction/transformation. The investigated samples were collected during plant trials from two different steel grades. The role and mode of the peritectic reaction/transformation are found to depend on the composition of the alloy, resulting in different types of surface cracks. The effect of the local variation in the cooling rate on the formation of the different types of cracks present in each steel grade, which can be due, for example, to the formation of oscillation marks, is demonstrated. The enhanced severity of the surface and internal oxidation, both of which depend on the alloy composition and consequent peritectic reaction, is highlighted. Experimental and theoretical studies show that different types of surface cracks can occur in peritectic steels depending upon the alloy composition and cooling rate, both of which define the fraction of the remaining liquid upon completion of the peritectic reaction/transformation.

Place, publisher, year, edition, pages
Springer, 2017. Vol. 48, no 3, p. 1625-1635
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-207874DOI: 10.1007/s11663-017-0926-8ISI: 000400385900019Scopus ID: 2-s2.0-85012230367OAI: oai:DiVA.org:kth-207874DiVA, id: diva2:1102692
Funder
Swedish Energy Agency
Note

QC 20170530

Available from: 2017-05-30 Created: 2017-05-30 Last updated: 2017-11-10Bibliographically approved

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Saleem, SaudVynnycky, MichaelFredriksson, Hasse

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