About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Refractory High Entropy Alloys and Ceramics
|
| Presentation Title |
Tuning Chemical Short-Range Ordering and Mechanical Properties in a Ductile Refractory Multi-Principal-Element Alloy |
| Author(s) |
Luke Gaydos, Hailong Huang, Zongyang Lyu, Prashant Singh, Duane Johnson, Ryan Ott, Nicolas Argibay |
| On-Site Speaker (Planned) |
Luke Gaydos |
| Abstract Scope |
The efficiency of energy generation methods continues to be limited by the availability of materials with greater performance, such as tolerance to extreme temperatures. Tuning properties depends on alloy design and on the availability of viable processing methods, which is a particularly challenging and narrow pathway for refractory alloys. Recent work by our team and others on the development of refractory multi-principal-element alloys (MPEAs) for turbine blades and other high temperature applications has shown that chemical short-range ordering (CSRO) can be tuned to achieve extraordinary combinations of strength and tensile ductility. This talk focuses on highlights from this work and efforts to establish an integrated alloy design and processing pathway to tune CSRO in refractory MPEAs. We present an example of how this tuning can be achieved via conventional heat treatment methods, including microscopy methods to quantify the size and concentration of CSRO clusters, and their impact on mechanical properties. |