The Effect of Low Concentrations Nb and C on the Structure and High-Temperature Strength of Fe3Al Aluminide

The Fe 3 Al iron aluminide alloyed by low concentrations of Nb and C ( c Nb , c C ) is studied. The influence of the c Nb / c C ratio on the structure and high-temperature yield strength of iron aluminide was investigated. The structure and phase composition were studied by scanning electron microsc...

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Published inMetallurgical and materials transactions. A, Physical metallurgy and materials science Vol. 48; no. 9; pp. 4093 - 4096
Main Authors Kratochvíl, Petr, Svec, Martin, Vodicková, Vra
Format Journal Article
LanguageEnglish
Published New York Springer US 01.09.2017
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Ferrous alloys
High strength alloys
High temperature
Intermetallic compounds
Iron aluminides
Iron compounds
Low concentrations
Materials Science
Metallic Materials
Metallurgy
Microstructure
Nanotechnology
Niobium
Phase composition
Precipitates
Precipitation
Solution strengthening
Structural Materials
Surfaces and Interfaces
Thin Films
Yield strength
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Summary:The Fe 3 Al iron aluminide alloyed by low concentrations of Nb and C ( c Nb , c C ) is studied. The influence of the c Nb / c C ratio on the structure and high-temperature yield strength of iron aluminide was investigated. The structure and phase composition were studied by scanning electron microscope equipped with EDS and EBSD. The strengthening mechanisms are detected as strengthening by incoherent precipitates of NbC and as a solid solution hardening by Nb atoms.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-017-4174-y