About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Defects and Interfaces: Modeling and Experiments
|
Presentation Title |
D-26: Influence of Mn-Ni Precipitates on Dislocation Glide in Reactor Pressure Vessel Steels |
Author(s) |
Ashley Foster, Douglas Spearot |
On-Site Speaker (Planned) |
Ashley Foster |
Abstract Scope |
Hardening of Reactor Pressure Vessel (RPV) steels has become a major concern for lifetime extension of light water reactors. Unfortunately, the mesoscale mechanisms by which hardening occurs are not fully understood, limiting predictive model development. Thus, the objective of this work is to use discrete dislocation dynamics (DDD) modeling to simulate the interaction between dislocations and Mn-Ni rich precipitates, which are common in RPV steels that have been exposed to irradiation. Using DDD to isolate mechanistic features of interest, changes in the ability of dislocations to glide through precipitate-containing domains will be assessed. The role of dislocation character angle, precipitate size and number density on dislocation propagation will be explored. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Nuclear Materials, Other |