| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloy Development for Energy Technologies: ICME Gap Analysis
|
| Presentation Title |
ExtremeMat: towards Microstructure and Composition Sensitive Models for the Creep Deformation of Engineering Steels |
| Author(s) |
Laurent Capolungo, Arul Kumar, Ricardo Lebensohn, Michael Glazoff, Michael Gao, Yuki Yamamoto |
| On-Site Speaker (Planned) |
Laurent Capolungo |
| Abstract Scope |
Structural steels utilized for power generation applications are subjected to particularly complex loading conditions. A robust knowledge of the evolution of the performance steels during service entails that one can establish firm bridges between microstructure, composition and material performance: such is one of the primary goals of the consortium ExtremeMat.
In this presentation, focus will be placed on detailing recent advances made by the
consortium in what concerns the development and validation of advanced polycrystalline creep
models. Among others, leveraging the elastic viscoplastic Fast Fourier Transform polycrystal mechanical solver, a mechanistic constitutive model sensitive to the dislocation content and arrangement, interstitial and substitutional solutes, and precipitates will be introduced. A detailed analysis of the precipitate formation and evolution processes will be presented and
rationalized using density functional theory simulations. By applying the model against
experimental data, the role played by solute vs precipitate strengthening processes will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, ICME, |