| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Alloy Development and Properties
|
| Presentation Title |
A High-throughput Strategy to Study Phase Stability and Mechanical Properties in Nb-Ti-V-Zr |
| Author(s) |
Mu Li, Zhaohan Zhang, Arashdeep Thind, Guodong Ren, Rohan Mishra, Katharine Flores |
| On-Site Speaker (Planned) |
Mu Li |
| Abstract Scope |
The current design strategy for refractory complex concentrated alloys (RCCAs) is mainly focused on identifying equiatomic solid solution alloys with high ductility. Information about competing intermetallic phases and the dependence of their stability on composition is still lacking. In this work, we examine phase stability in Nb-Ti-V-Zr as a function of composition. Starting with an equiatomic NbVZr alloy, we observe two Laves phases, cubic C15 and hexagonal C14, in addition to the BCC majority phase. First principles calculations predict the stable composition for each phase, which are consistent with experimental observations. We then use direct laser deposition to rapidly synthesize Nb-Ti-V-Zr compositional libraries, and use these to map the crystal structures, microstructures and mechanical properties as a function of composition. Experimental results are compared with first-principles calculations. This work provides guidelines for predicting compositional effects on microstructure and properties, which will accelerate the design of RCCAs for high-temperature applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Entropy Alloys, Mechanical Properties |