About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys V: Mechanical Behavior
|
| Presentation Title |
Excellent tensile properties in a Al0.3CoFeNi High Entropy Alloy attributed to ordering phase transformations |
| Author(s) |
Nachiket Keskar, Sudip Kumar Sarkar, Abhishek Sharma, Tirthesh Ingale, Advika Chesetti, Sriswaroop Dasari, Rajarshi Banerjee |
| On-Site Speaker (Planned) |
Nachiket Keskar |
| Abstract Scope |
This work investigates the microstructural evolution of the Al0.3CoFeNi alloy across different temperatures. A single-phase face-centered cubic (FCC) solid solution at high temperature decomposes first into an ordered B2 phase, and subsequently into a mixture of B2 and L1₂ ordered phases as temperature decreases. The resulting microstructure, comprising high fractions of B2 and L1₂ phases along with a minor retained FCC phase, yields excellent mechanical performance—characterized by a yield strength nearing 1500 MPa, ultimate tensile strength exceeding 1650 MPa, and tensile ductility of 12–13%. Notably, despite the high degree of ordering, the B2 and L1₂ phases contribute positively to deformability, as evidenced by the observed microstructural features in the deformed state. The correlation between these microstructural changes and the alloy's evolving magnetic behavior is also explored. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Characterization |