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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

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Thermo-mechanical Model of the Dynamics of Dislocation Fields in Transient Heterogeneous Temperature Fields
Investigation of Role of Interface Microstructure on the Shock Compression and Spall Failure Behavior of Nanoscale Cu/Ta Multiphase Metallic Materials
Lattice Orientation Effect on Intragranular Void Growth in Single- and Poly-crystalline Metals
Mesoscale Modeling of Deformation Behavior of Fe-based Microstructures at High Strain Rates and under Shock Loading Conditions
Modeling of Laser Interactions with BCC Metals Using a Hybrid Atomistic-continuum Approach
Molecular Dynamics Modeling of the Influence of Magnesium Dopants on Grain Boundary Stabilization in Nanocrystalline Aluminum
Multi-scale Simulations of Crystallographic Facet-orientation Dependent Corrosion Behavior in Metallic Alloys
The Microscopic Structure of a Heavily Irradiated Metal
The Role of Precipitates on the Microstructure-sensitive Creep Response of 347H Steel via Crystal Plasticity Simulations
Understanding Interface Properties Through Dislocation Dynamics Simulations in Metallic Nanolaminates

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