About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
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Presentation Title |
Design of Radiation-resistant Solid Solution Alloys Using Co-clustering of Synergistic Solutes |
Author(s) |
Pascal M. Bellon, Soumyajit Jana, Vaibhav Vasudevan, Robert S Averback |
On-Site Speaker (Planned) |
Pascal M. Bellon |
Abstract Scope |
The long-term degradation of materials during irradiation stems largely from the sustained fluxes and absorption of point defects at sinks. A promising approach to improve radiation resistance is by addition of solute that can trap vacancies, increasing the rate of vacancy-interstitial recombination. The benefits however are only transient, mainly because solutes that bind to vacancies are also fast diffusers, and thus quickly removed from the matrix. We have proposed an approach where two synergistic solutes are used, a solute “B” that binds to vacancies and a solute “C” that is a slow diffuser in “A” and binds to “B”. KMC simulations are used to identify the key thermo-kinetic solute properties to form “B-C” stable clusters that can immobilize vacancies. Experimental validation is presented on selected Cu alloys, subjecting thin films to heavy ion irradiation and characterizing them by transmission electron microscopy and atom probe tomography. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Modeling and Simulation, Thin Films and Interfaces |