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Effects of Primary Oxide and Oxide-Nitride Particles on the Solidification Structure in a Fe-20 mass%Cr Alloy Deoxidised with Ti and M (M = Zr or Ce)
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
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, Mechanical Metallurgy.
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2013 (English)In: ISIJ International, ISSN 0915-1559, E-ISSN 1347-5460, Vol. 53, no 2, 221-229 p.Article in journal (Refereed) Published
Abstract [en]

The ratio of equiaxed grains on a cross section and the size of equiaxed grains in a Fe-20 mass% Cr alloy deoxidised with Ti/M (M = Zr or Ce) were studied as function of nitrogen content and particle characteristics such as size distribution, morphology and composition. Fe-20 mass% Cr alloys were melted at 1 600 degrees C, deoxidised, and cooled to 1 400 degrees C followed by water quenching. Thereafter, the particles were separated from the matrix using electrolytic extraction using a 10%AA electrolyte and collected on a film-filter surface. The inclusion characteristics were determined using SEM. It was found that the number of particles increases with an increased N content. Furthermore, that the solidification structure was clearly affected by the number of primary oxide and oxide-nitride particles in the Ti/Zr deoxidation experiments. However, a similar effect could not be detected in the Ti/Ce deoxidation experiments.

Place, publisher, year, edition, pages
2013. Vol. 53, no 2, 221-229 p.
Keyword [en]
Fe-Cr alloy, Ti, Zr and Ce deoxidation, size distribution of equiaxed grain, electrolytic extraction, particle size distribution, N content
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-122358ISI: 000315834800006Scopus ID: 2-s2.0-84875728083OAI: oai:DiVA.org:kth-122358DiVA: diva2:622581
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QC 20130522

Available from: 2013-05-22 Created: 2013-05-20 Last updated: 2017-04-28Bibliographically approved

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Janis, JesperNakajima, KeijiKarasev, AndreyJonsson, StefanJönsson, Pär Göran
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