About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys V: Mechanical Behavior
|
| Presentation Title |
Deformation Characteristics and Phase Transformation in a B2-Base High-Entropy Alloy (HEA) |
| Author(s) |
rui feng, you rao, kaijun yin, chuan zhang, maryam Ghazisaeidi, jian-min zuo, Lia Amalia, ke an, peter liaw |
| On-Site Speaker (Planned) |
peter liaw |
| Abstract Scope |
Ordered B2 aluminides are promising for high-temperature applications due to their high ordering temperature, corrosion resistance, and pseudo-elasticity. However, poor room-temperature ductility—caused by limited slip systems and weak grain-boundary cohesion—hinders their use. To address this, we design a B2-based high-entropy alloy (HEA) with a minor ductile FCC phase as a grain-boundary adhesive. This alloy exhibits excellent strength and improved ductility at both room and elevated temperatures. Room-temperature ductility is enhanced through better slip activity and stress-induced martensitic transformation, reducing the need for five independent slip systems. These findings are supported by in-situ neutron diffraction, TEM, and Monte Carlo simulations. |
| Proceedings Inclusion? |
Planned: |