| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
J-14: Combinatorial Study of Rhenium Additions on the Non-Equiatomic VNbMoTaW System |
| Author(s) |
Taohid Bin Nur Tuhser, Thomas John Balk |
| On-Site Speaker (Planned) |
Taohid Bin Nur Tuhser |
| Abstract Scope |
The superior strength of refractory multi-principal element alloys (RMPEAs) at elevated temperature is often paired with poor room temperature ductility. Re addition has been adopted successfully to enhance ductility in traditional W- and Mo-based refractory alloys. In this study, we investigated the effect of Re additions on the structural and mechanical properties of VNbMoTaW system using a combinatorial screening approach. A 2D gradient compositional film of VNbMoTaWRe was deposited by magnetron sputtering. The alloy phase map was constructed using EDS and XRD. Nanoindentation was performed at different strain rates to compare hardness, elastic modulus, and strain rate sensitivity. The tensile properties of selected compositions were studied by in situ fragmentation testing. Configurations with enhanced ductility were suggested based on the crack onset strain and fracture morphology. Finally, bulk samples of screened alloys were prepared, and corresponding bulk mechanical properties were compared with the thin-film counterparts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, Thin Films and Interfaces |