Structure and composition of oxides in FeCrAl ODS alloy with Zr addition

FeCrAl ODS (oxide dispersion strengthened) alloy with Zr addition was investigated with the main focus on the structure and composition of oxide particles. The results reveal that almost all the small particles (diameter <2 nm) were found to be consistent with trigonal δ-phase Y 4 Zr 3 O 12 , wit...

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Bibliographic Details
Published inMaterials science and technology Vol. 33; no. 15; pp. 1790 - 1795
Main Authors Xu, Haijian, Lu, Zheng, Wang, Dongmei, Zhang, Zhiwei, Han, Yanfa, Liu, Chunming
Format Journal Article
LanguageEnglish
Published London, England Taylor & Francis 13.10.2017
SAGE Publications
Subjects
core/shell structure
FeCrAl ODS alloy
Mechanical alloying
nanoscale oxide
particles
Y4Zr3O12 particles
Mechanical alloying
core/shell structure
FeCrAl ODS alloy
nanoscale oxide
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Summary:FeCrAl ODS (oxide dispersion strengthened) alloy with Zr addition was investigated with the main focus on the structure and composition of oxide particles. The results reveal that almost all the small particles (diameter <2 nm) were found to be consistent with trigonal δ-phase Y 4 Zr 3 O 12 , with cubic Y 3 Al 5 O 12 (YAG) oxides occasionally detected. The large particles (>2 nm) were mainly identified as monoclinic Al 2 O 3 oxides. A core/shell structure is found in slightly large oxide particles. Oxide cores are Al and O while shell regions are enriched in Y. This leads us a promising way to control the structure and size of the oxides and develop the high-performance FeCrAl ODS alloys.
ISSN:0267-0836
1743-2847
DOI:10.1080/02670836.2017.1318245