TEM study of the effect of high-temperature thermal cycles on the stability of the Y-Al-O oxides in MA956 ODS steel

J. R.O. Leo, S. R. Moturu, M. E. Fitzpatrick

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MA956, a commercial ferritic grade of Oxide-Dispersion-Strengthened (ODS) steel, was investigated using transmission electron microscopy (TEM) to evaluate the influence of high-temperature thermal cycles on the nanometric dispersed oxides. Analyses of the oxide size distribution were carried out on foils from the as-received MA956 and following treatment at 1285â»°C for one hour, and show that growth of the oxides has occurred under the thermal cycle. Implications for the oxide stability in the steel matrix are discussed, in the light of the oxide chemical composition.

Original languageEnglish
Pages (from-to)3719-3725
Number of pages7
JournalJournal of Materials Research and Technology
Issue number5
Early online date11 Jul 2019
Publication statusPublished - 1 Sep 2019


Bibliographical note

©2019 The Authors. This is an open access article under the CCBY-NC-ND license( http://creativecommons.org/licenses/by-nc-nd/4.0/)


  • Characterization
  • Heat treatment
  • MA956
  • ODS
  • Oxides
  • TEM

ASJC Scopus subject areas

  • Ceramics and Composites
  • Biomaterials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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