| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
A coupled crystal plasticity-Hydrogen Adsorption-Diffusion-Desorption Model for Investigating Hydrogen Retention in Austenitic Steel |
| Author(s) |
Jiahao Cheng, Saket Thapliyal, Weicheng Zhong, Yukinori Yamamoto |
| On-Site Speaker (Planned) |
Jiahao Cheng |
| Abstract Scope |
The widespread adoption and utilization of hydrogen as a sustainable energy solution depend on developing reliable methods for its transportation and storage, as well as converting fossil-fuel-based infrastructure into hydrogen-compatible components. Thoroughly understanding the hydrogen-microstructure interaction via high fidelity models is critical for the high hydrogen embrittlement resistant materials development. This work presents a comprehensive computational model that considers the hydrogen adsorption-transportation-desorption in 316L material microstructure under the influence from various hydrogen traps/crystal defects, and stress and dislocation density evolutions. The model is calibrated and validated with the hydrogen charging-discharging experiments, by comparing model prediction to the thermal desorption spectrometry (TDS) measurements. Various material parameters can be determined and verified from the model-experiment comparison, such as the binding energy associated with different defects, and material state variables e.g., dislocation densities. Additionally, the sensitivity of various microstructural features and residual stress are investigated for hydrogen retention. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Iron and Steel, Environmental Effects |