Chromium interaction with TiO2 dispersoids in oxide dispersion strengthened ferritic steel

A. V. Krajnikov, H. M. Ortner, S. Weinbruch, W. Grogger, P. Warbichler, F. Hofer, V. M. Yurchenko

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Auger electron spectroscopy and energy filtering TEM were used to study alloying element distributions in the vicinity of matrix-TiO2 dispersoid interphase boundaries in an Fe-Cr ferritic steel strengthened by dispersed TiO2 particles. Pronounced interfacial Cr segregation was found to occur in the course of annealing at 700°C. The Cr segregation also leads to Cr diffusion into the dispersoids and to the formation of oxide phases with different Cr/Ti ratios. The observed Cr segregation is described in terms of diffusion into the field of elastic stresses.

Original languageEnglish
Pages (from-to)1425-1432
Number of pages8
JournalMaterials science and technology
Volume15
Issue number12
DOIs
Publication statusPublished - 1 Jan 1999

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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