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)

Jesper Janis, Keiji Nakajima, Andrey Karasev, Stefan Jonsson, Ryo Inoue, Pär Göran Jönsson

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

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 1600°C, deoxidised, and cooled to 1 400°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 filmfilter 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.

Original languageEnglish
Pages (from-to)221-229
Number of pages9
JournalIsij International
Volume53
Issue number2
DOIs
Publication statusPublished - 2013 Apr 8

Keywords

  • Electrolytic extraction
  • Fe-Cr alloy
  • N content
  • Particle size distribution
  • Size distribution of equiaxed grain
  • Ti
  • Zr and Ce deoxidation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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