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

Research output: Contribution to journalArticle

Abstract

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 1285ºC 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.
LanguageEnglish
Pages3719-3725
Number of pages7
JournalMaterials Research and Technology
Volume8
Issue number5
Early online date11 Jul 2019
DOIs
Publication statusPublished - 31 Oct 2019

Fingerprint

Steel
Oxides
Transmission electron microscopy
Temperature
Metal foil
Hot Temperature
Chemical analysis

Keywords

  • ODS
  • characterization
  • oxides
  • MA956
  • heat treatment
  • TEM

Cite this

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TEM study of the effect of high-temperature thermal cycles on the stability of the Y-Al-O oxides in MA956 ODS steel. / Leo, J.R.O.; Moturu, S.R.; Fitzpatrick, M.E.

Vol. 8, No. 5, 31.10.2019, p. 3719-3725.

Research output: Contribution to journalArticle

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AU - Leo, J.R.O.

AU - Moturu, S.R.

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AB - 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 1285ºC 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.

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