About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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High Entropy Alloys IX: Structures and Modeling
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Presentation Title |
Understanding Radiation Resistance in High Entropy Alloys Through Atom Probe Tomography |
Author(s) |
Jonathan Poplawsky, Xing Wang, Wei-Ying Chen, Tengfei Yang, William Weber, Yanwen Zhang |
On-Site Speaker (Planned) |
Jonathan Poplawsky |
Abstract Scope |
High-entropy alloys (HEAs) have become increasingly popular in the nuclear materials field because of their potentially superior radiation resistance compared to conventional alloys. Quantifying segregation in and around defect sinks is important for understanding elemental diffusion mechanisms as well as elemental mobility in radiation environments. Atom probe tomography (APT) is a unique technique capable of detecting segregation in and around defects in 3D with sub-nm resolution. A few HEA systems containing a range of 2-5 elements that were subject to ion irradiation will be presented to show segregation trends around defects and how these trends reveal why certain alloys are more radiation resistant than others. The information within the APT datasets can be used to better predict material properties for future alloy development. APT was conducted at ORNL's CNMS, which is a U.S. DOE Office of Science User Facility. |
Proceedings Inclusion? |
Planned: TMS Journal: Metallurgical and Materials Transactions |
Keywords |
High-Entropy Alloys, Characterization, Other |