About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
|
Presentation Title |
One-dimensional Migration of Prismatic Loop in Refractory High Entropy Alloy and Effects of Local Chemical Order |
Author(s) |
Hangman Chen, Penghui Cao |
On-Site Speaker (Planned) |
Hangman Chen |
Abstract Scope |
One-dimensional migration of nanometer-sized prismatic loops in irradiated metals has been studied for decades to understand the fundamental mechanisms of structural materials degradation under extreme conditions. With high melting points, extraordinary mechanical strength and irradiation tolerance, body-centered cubic refractory high entropy alloys (HEAs) are promising materials for nuclear applications. However, the influence of high local chemical complexity on defect migration and evolution is not well understood. In this talk, we present the atomistic mechanisms and energy landscape underlying the one-dimensional migration of prismatic loops in refractory HEAs. Our results show that local chemical complexity increases the roughness of habit plane and impacts the migration behaviors. The effects of local chemical order on the one-dimensional migration will also be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Modeling and Simulation, Nuclear Materials |