A single-crystal co-base superalloy strengthened by gamma' precipitates: structure and mechanical properties
- An experimental Co-base superalloy was designed from the Ni-base system by exchange of Ni and Co concentrations. The alloy consist of a Co-matrix (γ phase) strengthened by cuboidal precipitates Co3(Al,X) (γ' phase). The γ'-solvus temperature is 1?005?°C. [001] single crystals of this alloy were solidified and tested for tension at different temperatures up to 1?000?°C. It was found that the Co-base alloy has a much lower yield stress than a corresponding Ni-base alloy, but a much higher ductility. The partitioning behaviour of the alloying elements in the Co-base alloy and the deformation mechanisms were investigated by scanning and transmission electron microscopy.
Autor*innen: | N. Petrushin, K. Hvatzkiy, V. Gerasimov, T. Link, A. Epishin, Gert Nolze, G. Gerstein |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Advanced engineering materials |
Jahr der Erstveröffentlichung: | 2015 |
Verlag: | Wiley-VCH Verl. |
Verlagsort: | Weinheim |
Jahrgang/Band: | 17 |
Ausgabe/Heft: | 6 |
Erste Seite: | 755 |
Letzte Seite: | 760 |
Freie Schlagwörter: | Microstructure; Precipitation; Stress |
DOI: | 10.1002/adem.201500088 |
ISSN: | 1438-1656 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 12.10.2015 |