| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Environments
|
| Presentation Title |
Implications of additively manufactured microstructures for hydrogen embrittlement resistance of steels |
| Author(s) |
Saket Thapliyal, Jiahao Cheng, Weicheng Zhong, Andrzej Nycz, Yukinori Yamamoto |
| On-Site Speaker (Planned) |
Saket Thapliyal |
| Abstract Scope |
Despite their typically low hydrogen embrittlement (HE) susceptibility, hydrogen segregation at certain microstructural sites, such as grain boundaries weakens the boundaries of austenitic stainless steels and leads to their premature failure. In this work, we discuss the implications of unique microstructural features of additively manufactured (AMed) SS316L for its HE resistance; the spatiotemporal phenomena responsible for unique microstructural evolution in AMed SS316L are also discussed. To this end, the AMed SS316L is charged with hydrogen. Subsequently, the effect of AM-produced microstructural features on the mechanical behavior in hydrogen rich environments is discussed. A crystal plasticity-coupled hydrogen adsorption diffusion model is used to describe the hydrogen-microstructure interaction of different AMed specimens with varying microstructural attributes. Overall, by revealing the mechanistic details of hydrogen-microstructure interaction, this research will facilitate the design of HE resistant materials by additive manufacturing and a subsequent implementation of hydrogen fuel in a CO2 free economy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Iron and Steel, Solidification |