| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
J-60: On the Pursuit of Stress-induced Transformation Effect in the High-entropy Ti-Zr-Nb-Mo-Al System |
| Author(s) |
Mariano Casas-Luna, Dalibor Preisler, Jiří Kozlík, Miloš Janeček, Josef Stráský |
| On-Site Speaker (Planned) |
Mariano Casas-Luna |
| Abstract Scope |
The empirical relationship between the bond order (Bo) and the d-orbital energy level (Md) is widely used in the design of titanium alloys with enhanced mechanical properties. This approach was introduced later in the development of titanium-rich multi-principal element alloys (MPEAs) that could exhibit superior strengthening properties by stress-induced transformation effects, such as transformation-induced plasticity (TRIP), and twinning-induced plasticity (TWIP). These deformation effects can provide at once strength and ductility in MPEAs, highlighting the importance of finding and adjusting the numerous compositions of such alloys.
In this study, the Bo-Md approach was applied to produce several MPEAs of the Ti-Zr-Nb-Mo-Al system. The chemical compositions were selected aiming to obtain a stress-induced transformation effect in the high-entropy system, varying from 20 to 35 at.% of Ti. Results show the dependence of the final phase composition with the Zr/Al content, impacting the microhardness and compressive deformation mechanism of the produced MPEAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Phase Transformations, Titanium |