About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
The Influence of Spatially Stochastic Toughness on Intergranular Fracture: A Phase Field Fracture Study |
Author(s) |
Miguel Enrique Fernandez, Douglas E Spearot, Remi Dingreville, Joseph Monti |
On-Site Speaker (Planned) |
Miguel Enrique Fernandez |
Abstract Scope |
Grain boundaries (GBs) in metallic materials are prime locations for the nucleation and propagation of cracks. The excess energy of GBs reduces the strain energy required to initiate or propagate a crack, and solute segregation to the GB can cause embrittlement. Intergranular fracture considerations have been implemented in phase field fracture simulations in recent years. However, structural and compositional details at the nanoscale, such as distributions of solute embrittlement, fracture path, and metastable GB geometry, are not commonly considered. Since it is impractical to implement these nanoscale phenomena in phase field directly, we propose to assign stochastic fracture related properties to GBs. We show with our modified phase field fracture approach that assigning stochastic properties to the GBs biases fracture toughness and fracture path meaningfully. Additionally, we discuss how appropriate distributions can be gathered from atomistic data to develop a quantitative approach for phase field fracture while considering stochastic effects. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Mechanical Properties, Other |