|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Role of Interaction between Particles on Particle Stability
||Kunok Chang, Junhyun Kwon, Gyeong-Geun Lee
|On-Site Speaker (Planned)
Analysis of the precipitate stability of multi particles is an extremely complicated task. There have been significant accomplishments to understand Ostwald ripening behavior based on the mean-field assumption. We performed the phase-field simulations of multi-phase precipitate behaviors to quantitatively evaluate the interaction between particles without any prior assumption. We choose Fe-Mn-Ni-Si (FMNS) Quaternary system to investigate multi-phase coarsening. We adopted KKS (Kim-Kim-Suzuki) model to carry out multi-phase, multi-component phase-field model. FMNS system, which is a prototype of the RPV (Reactor Pressure Vessel) steel, is highly interested in the nuclear engineering. Since Mn-Ni-Si rich (MNS) precipitate is one of the main sources of the late-stage hardening, we examined the stability of the MNS precipitates. T3, T6, T7 precipitated phases were considered in UW1 database in this study and we also simulated the evolutions of T3-T3, T7-T7 and T3-T7 two precipitates to quantify the interaction between particles.
||Planned: Supplemental Proceedings volume