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Role of Y-Al Oxides During Extended Recovery Process of a Ferritic ODS Alloy

AuthorsCapdevila, Carlos; Pimentel, G.; Aranda, M. M.; Rementería, Rosalía; Dawson, K.; Urones-Garrote, E.; Tatlock, G. J.; Miller, M. K.
Tomography analysis
Fe-Cr-Al oxide
Issue Date2015
CitationJOM 67: 2208-2215 (2015)
Abstract© 2015, The Minerals, Metals & Materials Society. 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 Y<inf>2</inf>O<inf>3</inf> and its combination with Al to form the YAlO<inf>3</inf> perovskite oxide particles process, mainly located at the grain boundaries. Finally, atom probe tomography analysis revealed a significant Ti build-up at the grain boundaries that might affect subsequent migration during recrystallization.
Publisher version (URL)http://dx.doi.org/10.1007/s11837-015-1559-5
Identifiersdoi: 10.1007/s11837-015-1559-5
issn: 1543-1851
Appears in Collections:(CENIM) Artículos
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