About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
2025 Graduate Student Poster Contest
|
| Presentation Title |
SPG-12: Design and Optimization of Ni-Mo-W-Cr-Al-Ti Alloys for High-Temperature Applications |
| Author(s) |
Sonali Ravikumar, Naveen Kumar Nagaraja, Vijay K Vasudevan |
| On-Site Speaker (Planned) |
Sonali Ravikumar |
| Abstract Scope |
Our recent work on the design of Ni-Mo-W-Cr-Al-Ti alloys for high-temperature applications using an ICME approach. We systematically investigated alloys with varying Mo/W ratios and Al/Ti additions, and subjected them to thermal aging at 700–850°C. The Al/Ti-modified alloys exhibited significant increases in hardness, attributed to the formation of γ′/γ″ phases and W/Mo-rich precipitates. These alloys demonstrated superior thermal phase stability and enhanced mechanical strength when compared to commercial alloys, with the precipitates playing a key role in these improvements.
We want to provide a deeper analysis of the influence of Mo concentration in the presence of Al/Ti on the development of ordered phases and their contribution to the strengthening mechanisms. The results show the critical role of microstructural optimization in achieving enhanced performance under the extreme conditions of MCFRs. We explore the relationship between alloy composition, thermal aging, and mechanical testing to inform future alloy design strategies for high-performance applications. |