| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
Recent Developments of Body-centered-cubic (BCC) High-entropy Alloys |
| Author(s) |
Lia Amalia, Xuesong Fan, Hugh Shortt, Baldur Steingrimsson, Fangfei Liu, Yong Zhang, Yanfei Gao, Peter Liaw |
| On-Site Speaker (Planned) |
Peter Liaw |
| Abstract Scope |
High-entropy alloys (HEAs) are alloys with five or more principal elements in equimolar or near-equimolar ratios. Compared to HEAs with other structures, BCC HEAs have stronger lattice-distortion effects, which leads to more significant solid-solution strengthening. The BCC structures in HEAs are more common to be found in refractory HEAs (RHEAs). Atypical as compared to conventional BCC metals, some BCC HEAs are found to have edge dislocations after deformation. BCC RHEAs are known to have low ductility. Recently, by conducting a series of heat treatments, the microstructure of the precipitates could be manipulated, and the plasticity of Al0.5NbTa0.8Ti1.5V0.2Zr could be enhanced. High-throughput design coupled with laser additive manufacturing has made faster design, fabrication, and characterization processes possible. Machine learning has also been utilized to predict high-temperature strengths in HEAs. BCC RHEAs have been investigated to have the potential to be used in nuclear, high-temperature, and biomedical applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Modeling and Simulation, Additive Manufacturing |