About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Microstructure-Sensitive Modeling Across Length Scales: An MPMD/SMD Symposium in Honor of David L. McDowell
|
| Presentation Title |
Micromechanics of Precipitation in Engineering Alloys |
| Author(s) |
Laurent Capolungo, Khanh Dang |
| On-Site Speaker (Planned) |
Laurent Capolungo |
| Abstract Scope |
Engineered metallic microstructures are typically strengthened by solutes, grain boundaries and precipitates. Upon exposing these metals to harsh environments, including elevated temperatures under load, the materials microstructure can evolve- in turns this impacts the mechanical response of the material. In this context, this presentation introduces a modeling framework to predict the role of stresses on the nucleation and growth of precipitates, and to further relate these processes to creep properties. We thus propose a precipitation model rooted in the Focker Planck formalism that leverages Eshelbian micromechanics and dislocation theory to quantify the role of dislocations and remotely imposed loads on the kinetics of formation of precipitates. This precipitation model is then embedded in a crystal plasticity based constitutive model leveraging Fast Fourier transforms to compute the evolution of micromechanical fields and dislocation densities in polycrystals. The model is applied to the case of M23C6 precipitation in 316H stainless steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, ICME |