| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
J-65: Plastic Deformation of BCC Medium-entropy Alloys in the Ti-Zr-Nb Systems |
| Author(s) |
Shohei Onda, Shu Han, Zhenghao Chen, Kyosuke Kishida, Haruyuki Inui |
| On-Site Speaker (Planned) |
Shohei Onda |
| Abstract Scope |
Ti-Zr-Nb-Hf-Ta BCC high-entropy alloy (HEA) and its derivative medium-entropy alloys (MEAs) have received considerable attentions as new structural materials because of good retention of high strength up to very high temperatures as well as excellent ductility even at liquid nitrogen temperature. Recently, strength of Ti-Zr-Nb-Hf-Ta based HEA/MEAs has been reported to depend strongly on the combination of elements and their chemical compositions. However, the underlying mechanism that controls the element/composition dependent strength has not been fully clarified yet. In the present study, plastic deformation behavior of polycrystals of BCC MEAs in the Ti-Zr-Nb ternary system was systematically investigated by uniaxial mechanical tests (tension and compression) at room temperature as a function of chemical composition. Deformation microstructures were investigated by optical microscopy and transmission electron microscopy in order to identify the loading-axis dependence of the slip planes and dislocation structures, respectively. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, Mechanical Properties |