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)
2013 (English)In: ISIJ International, ISSN 0915-1559, Vol. 53, no 2, 221-229 p.Article in journal (Refereed) Published
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.
Fe-Cr alloy, Ti, Zr and Ce deoxidation, size distribution of equiaxed grain, electrolytic extraction, particle size distribution, N content
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-122358DOI: 10.2355/isijinternationa1.53.221ISI: 000315834800006ScopusID: 2-s2.0-84875728083OAI: oai:DiVA.org:kth-122358DiVA: diva2:622581
QC 201305222013-05-222013-05-202013-05-22Bibliographically approved