| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
Design and Development of Refractory High-entropy Alloys via An Experimentally Driven High-throughput Approach |
| Author(s) |
Chanho Lee, Dongyue Xie, Benjamin Derby, Jon Kevin Baldwin, Christopher Tandoc, Osman Ei Atwani, Yong-Jie Hu, Nan Li, Saryu J Fensin |
| On-Site Speaker (Planned) |
Chanho Lee |
| Abstract Scope |
High-entropy alloy (HEA) design strategies have been limited to theoretical/computational approaches due to their compositional complexity and extremely large compositional parameter space. In this work, we developed an experimentally driven, high-throughput, HEA design approach using a physical vapor deposition (PVD) technique and coupled it with nanomechanical testing to accelerate material design for structural applications. The PVD technique enabled the formation of a compositional gradient across a thin-film sample. Specifically, a 10 cm wafer was used to manufacture a continuous set of 80 HEA compositions within the Nb-Ti-V-Zr family using a single deposition cycle. By applying the solid-solution strengthening theory and developed machine-learning approaches, the strength and ductility of these HEA compositions were quantitatively determined/predicted and then experimentally verified by nano-indentation hardness test. Consequently, 7 refractory HEA compositions were successfully down-selected based on optimized strength and ductility predictions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, High-Temperature Materials |