Modeling the precipitation processes and the formation of hierarchical microstructures in a single crystal high entropy superalloy
GORSSE, Stéphane
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Department of Materials Science and Engineering
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Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Department of Materials Science and Engineering
GORSSE, Stéphane
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Department of Materials Science and Engineering
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Department of Materials Science and Engineering
MURAKAMI, Hideyuki
Research Center for Structural Materials
Department of Nanoscience and Nanoengineering
< Reduce
Research Center for Structural Materials
Department of Nanoscience and Nanoengineering
Language
en
Article de revue
This item was published in
Scripta Materialia. 2021-03, vol. 193, p. 147-152
Elsevier
English Abstract
Although superior high temperature tensile yield strength of high entropy superalloys (HESAs) arises from their hierarchical microstructure, the precipitation processes driving its formation remains unclear. In the present ...Read more >
Although superior high temperature tensile yield strength of high entropy superalloys (HESAs) arises from their hierarchical microstructure, the precipitation processes driving its formation remains unclear. In the present study, we analyze the kinetics of γ’ and γ precipitations by treating the concurrent nucleation, growth and coarsening using common computational thermodynamic and kinetic tools to simulate the microstructure genesis and evolution in HESA during thermal treatments. The ability of the simulations to reproduce the experimentally observed microstructure parameters is evaluated. Temperature-time-transformation (TTT) diagrams are calculated to serve as guidelines for further optimization of the hierarchical microstructure of HESAs.Read less <
Origin
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