| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Investigating atomic size misfit effects in refractory high-entropy alloys |
| Author(s) |
Juree Jung, Jongtae Kim, Jiwoon Lee, Gian Song, Mihye Lee, Donghyun Bae, Junhee Han, Leeseung Kang |
| On-Site Speaker (Planned) |
Juree Jung |
| Abstract Scope |
Refractory high-entropy alloys (RHEAs), such as the TiNbZrHfTa alloy with a body-centered cubic (bcc) structure, exhibit exceptional mechanical properties at both room and elevated temperatures. Unlike face-centered cubic (fcc) HEAs, RHEAs can form alloys with large atomic size misfits (δ) due to the diverse atomic sizes of refractory elements. However, their application as structural materials are still limited by the relatively heavy and costly elements they comprise.
This study investigates the influence of atomic size misfit, ranging from 0.3% to 7%, on the mechanical properties of RHEAs. Through controlled alloy design and Pair Distribution Function (PDF) analysis, we examine how variations in atomic size influence the microstructure and mechanical behavior of these alloys. Our findings provide valuable insights for optimizing the design of RHEAs to enhance their performance in demanding environments, paving the way for their broader application |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Other |