| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Computational and Modeling Challenges in Metals and Alloys for Extreme Environments
|
| Presentation Title |
The Role of Precipitates on the Microstructure-sensitive Creep Response of 347H Steel via Crystal Plasticity Simulations |
| Author(s) |
Veerappan Prithivirajan, Nathan Beets, Aritra Chakraborty, M Arul Kumar, Ricardo A. Lebensohn, Laurent Capolungo |
| On-Site Speaker (Planned) |
Veerappan Prithivirajan |
| Abstract Scope |
The development of microstructure-sensitive models for the creep response of metals is necessary to accelerate the design and assessment of materials for high temperature applications. Creep is predominantly governed by diffusion- and dislocation- mediated processes for which the kinetics and kinematics are affected by the evolution of precipitates in the medium. Dislocation-precipitate interactions are complex processes dependent on multiple factors like size, shape, density, distribution, configuration, and type of precipitates, local stress state, and temperature. In this work, we propose a physics-based constitutive model accounting for the precipitate-dislocation interactions and capable of capturing the effects of multiple precipitates on the plastic response of steels. Among others we show that the newly proposed model can capture both correlated and uncorrelated precipitate bypass modes. An application is then pursued for the case of 347H steel. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Other, Other |