Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

Effect of alloying elements on the coarsening rate of γʹ precipitates in multi-component CoNi-based superalloys with high Cr content

MPG-Autoren
/persons/resource/persons246618

Antonov,  Stoichko
Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Zhuang, X., Antonov, S., Li, L., & Feng, Q. (2021). Effect of alloying elements on the coarsening rate of γʹ precipitates in multi-component CoNi-based superalloys with high Cr content. Scripta Materialia, 202: 114004. doi:10.1016/j.scriptamat.2021.114004.


Zitierlink: https://hdl.handle.net/21.11116/0000-0009-4634-E
Zusammenfassung
The γʹ coarsening behavior during long-term aging at 850°C of multi-component CoNi-based superalloys with high (14 at.) Cr content were investigated, and the effects of W, Mo or Ti (1 at.) additions were analyzed with respect to the change in the γ/γʹ microstructure, lattice misfit, and elemental partitioning behavior. The coarsening behavior of the γʹ precipitates follows the classical Lifshitz-Slyozov-Wagner (LSW) model, where the size is proportional to t1/3. The addition of either W, Mo or Ti (1 at.) alters the γ/γʹ elemental partitioning behavior and thus the γ/γʹ lattice misfit and interfacial energy, resulting in quite different coarsening rates of the γʹ precipitates, with Ti having the most significant effect. Cr was found to be the rate-limiting element of γʹ coarsening rather than the other alloying elements. This study could provide guidance for the design and optimization of CoNi-based superalloys with lower γ' coarsening rate. © 2021 Acta Materialia Inc.