| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Enhancing Deformability of W-based Refractory Multi-Principal Element Alloys through Titanium Alloying |
| Author(s) |
Ali Ozalp, Yunus Eren Kalay, Osman El-Atwani, Eda Aydogan |
| On-Site Speaker (Planned) |
Ali Ozalp |
| Abstract Scope |
W-based Refractory Multi-Principal Element Alloys (RMPEAs) are considered for fusion applications due to high radiation resistance and improved mechanical properties such as high temperature load bearing and creep resistance. However, they suffer from high ductile-to-brittle transition temperature, low damage tolerance, and brittleness at low temperatures. In this study, different amounts of Ti were introduced into the WMoNbTa system to induce lattice distortion and enhance deformability. The addition of Ti decreased the elastic modulus from 63 GPa to 45 GPa and increased the yield strength from approximately 950 MPa to 1200 MPa, indicating an increase in lattice distortion. This increased lattice distortion and lower elastic modulus enhance the dislocation-based plasticity. Experimental results showed a significant increase in room temperature compressive deformability from 2.5% to 20%. In our presentation, we will discuss the mechanical test results and TEM findings to explain how dislocation-based deformation characteristics change with the change in lattice distortion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, Mechanical Properties |