| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Progress towards Understanding the Synthesis and Behavior of Metals Far from Equilibrium: A SMD Symposium Honoring Enrique Lavernia on the Occasion of His 60th Birthday
|
| Presentation Title |
Predictive Multiphase Evolution in Al-containing High-entropy Alloys |
| Author(s) |
Louis J. Santodonato, Peter K. Liaw, Raymond R. Unocic, Hongbin Bei, James R. Morris |
| On-Site Speaker (Planned) |
Peter K. Liaw |
| Abstract Scope |
The mixing of five or more elements, in near- equimolar concentrations, to form disordered substitutional solid solutions is a central feature of the class of materials known as high-entropy alloys (HEAs). It is now becoming clear that the most promising HEAs for practical applications may actually be those, which undergo phase transformations and separations during cooling. The present talk describes an approach to guide the development of multi-phase HEAs, using a simple Monte Carlo model with parameters derived from first-principles calculations. These high-throughput simulations are compared with neutron scattering, in situ microscopy, and calorimetry measurements. We demonstrate that the present technique captures not only the qualitative features, but also gives accurate quantitative results for the intermetallic phase formation and microstructure evolution of the Al-containing HEAs. Work is underway to generalize the approach and study a wider range of compositions |
| Proceedings Inclusion? |
Undecided |