| About this Abstract |
| Meeting |
3rd World Congress on High Entropy Alloys (HEA 2023)
|
| Symposium
|
HEA 2023
|
| Presentation Title |
A CALPHAD Based Approach for Designing Precipitation-hardened High-entropy Alloys |
| Author(s) |
Diego Santana, Claudio Kiminami, Amy Clarke, Michael Kaufman, Francisco Gil Coury |
| On-Site Speaker (Planned) |
Francisco Gil Coury |
| Abstract Scope |
Designing precipitation-hardened high-entropy alloys with good mechanical properties is challenging due to the complexity introduced by composition and heat treatment temperatures. To address this, thermodynamic calculations based on the CALPHAD method were employed to analyze 11,235 compositions of Cr-Co-Ni-Al-Ti alloys. By applying specific filtering criteria, the remaining alloys were evaluated to estimate their solid solution hardening and maximum precipitation hardening contributions to yield strength. To validate the methodology, three alloys were selected, processed, and subjected to microstructural and mechanical characterization techniques. The results were compared with predictions made using CALPHAD and mathematical modeling, revealing a positive qualitative agreement. This approach shows promising potential in effectively identifying and developing new precipitation-hardened alloys with improved mechanical properties. |
| Proceedings Inclusion? |
Planned: Metallurgical and Materials Transactions |