Anomalous coarsening behaviour in Ni-Al alloys: Insights from phase-field simulations
| Autor: | Rupesh Chafle, Rajdip Mukherjee |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Classical theory
Materials science Mechanical Engineering Thermodynamics 02 engineering and technology Particle position 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences 0104 chemical sciences Superalloy Mechanics of Materials General Materials Science Elasticity (economics) 0210 nano-technology |
| Zdroj: | Materials Letters. 279:128444 |
| ISSN: | 0167-577X |
| Popis: | Elastic fields affect the late-stage coarsening behavior in Ni-based superalloys during their service conditions. Their high-temperature properties are attributed to the stable γ - γ ' morphology. Elasticity can alter the coarsening dynamics of such microstructures by modifying the Gibbs-Thompson effect. To study the influence of elasticity, particle position, and ordering type on the coarsening process, we simulate different sets of few-particle simulations, and obtain compelling results which are different from those predicted by the classical theory. This anomaly is correlated with inter-particle distance and explained by total chemical potential, which ultimately drives the entire process. |
| Databáze: | OpenAIRE |
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