About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Modeling of Fatigue Crack Growth and Environmental Effects |
| Author(s) |
Ting Zhu |
| On-Site Speaker (Planned) |
Ting Zhu |
| Abstract Scope |
Environmentally induced embrittlement of metallic materials is a widely observed phenomenon, yet developing predictive computational models for this complex behavior remains a significant challenge. In this talk, I will focus on an ongoing effort to achieve multiscale modeling of hydrogen-mediated fatigue crack growth in austenitic stainless steel. We have developed an interatomic potential for the Fe-Ni-Cr-H alloy system to perform atomistic simulations of hydrogen–dislocation interactions in stainless steel. In parallel, we have formulated a cyclic crystal plasticity model, informed by atomistic reaction pathway simulations of dislocation mobility. Our crystal plasticity finite element simulations reveal the effects of grain-level plastic deformation on fatigue crack growth. Finally, I will discuss the challenges and opportunities in advancing predictive modeling of hydrogen embrittlement. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Modeling and Simulation, Mechanical Properties |