| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Investigation of Elastic and Plastic Deformation Behavior of Nature Selected Refractory High Entropy Alloy |
| Author(s) |
Jae Kwon Kim, Ji Young Kim, Hyun Seok Oh, Eun Soo Park |
| On-Site Speaker (Planned) |
Jae Kwon Kim |
| Abstract Scope |
With rapid advancements in aerospace under extreme conditions, there is a growing need for new alloys for Safety-Critical Structural Applications (SCSA) that possess high durability. BCC Refractory High Entropy Alloys (RHEAs) are promising for SCSA due to their excellent high temperature properties. However, the correlation between constituent elements and properties is not well understood, complicating efforts to address phase stability reduction above 800°C and poor room-temperature ductility. In this study, RHEAs were developed using the 'Natural Mixing Guided Design' method, known for producing compositions with excellent phase stability. Interestingly, the selected alloys exhibited superior ductility at room temperature, and we performed neutron scattering diffraction to confirm the elastic deformation behavior of the material and analyzed plastic deformation behavior through in-situ deformation analysis within SEM to clarify the reason for this ductility. Based on these results, we propose strategies to ensure excellent phase stability and room-temperature ductility in future RHEA development. |
| Proceedings Inclusion? |
Planned: |