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Modeling the precipitation processes and the formation of hierarchical microstructures in a single crystal high entropy superalloy
- Source :
- Scripta Materialia, Scripta Materialia, Elsevier, 2021, 193, pp.147-152. ⟨10.1016/j.scriptamat.2020.11.002⟩
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- International audience; 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.
- Subjects :
- 010302 applied physics
Materials science
Precipitation (chemistry)
Mechanical Engineering
Kinetics
Metals and Alloys
Nucleation
Thermodynamics
02 engineering and technology
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
Superalloy
13. Climate action
Mechanics of Materials
0103 physical sciences
Thermal
Ultimate tensile strength
General Materials Science
0210 nano-technology
Single crystal
Subjects
Details
- Language :
- English
- ISSN :
- 13596462
- Database :
- OpenAIRE
- Journal :
- Scripta Materialia, Scripta Materialia, Elsevier, 2021, 193, pp.147-152. ⟨10.1016/j.scriptamat.2020.11.002⟩
- Accession number :
- edsair.doi.dedup.....62266b771f7db4ce9dfe05a6f540d913
- Full Text :
- https://doi.org/10.1016/j.scriptamat.2020.11.002⟩