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Title: Role of Y-Al oxides during extended recovery process of a ferritic ODS alloy

Journal Article · · JOM. Journal of the Minerals, Metals & Materials Society
 [1];  [1];  [1];  [1];  [2];  [3];  [2];  [4]
  1. National Center for Metallurgical Research (CENIM-CSIC), Madrid (Spain)
  2. Univ. of Liverpool, Liverpool (United Kingdom)
  3. Univ. Complutense de Madrid, Madrid (Spain)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The microstructural stability of Y-Al oxides during the recrystallization of Fe-Cr-Al oxide dispersion strengthened alloy is studied in this work. The goal is to determine the specific distribution pattern of oxides depending where they are located: in the matrix or at the grain boundaries. It was concluded that those located at the grain boundaries yielded a faster coarsening than the ones in the matrix, although no significant differences in composition and/or crystal structure were observed. However, the recrystallization heat treatment leads to the dissolution of the Y2O3 and its combination with Al to form the YAlO3 perovskite oxide particles process, mainly located at the grain boundaries. Lastly, atom probe tomography analysis revealed a significant Ti build-up at the grain boundaries that might affect subsequent migration during recrystallization.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1235816
Journal Information:
JOM. Journal of the Minerals, Metals & Materials Society, Vol. 67, Issue 10; ISSN 1047-4838
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Cited By (2)

Retracted article: Microstructure characterisation and tensile properties of 18Cr-4.5Al-0.3Zr- oxide dispersion strengthened steel journal January 2019
Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel journal June 2018

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