About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Prospects of Fusion Additively Manufactured Microstructures for Enhancing Hydrogen Embrittlement Resistance |
Author(s) |
Saket Thapliyal, Jiahao Cheng, Weicheng Zhong, Yukinori Yamamoto, Andrzej Nycz |
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 investigate the implications of unique microstructural attributes of wire arc additive manufacturing (WAAM) processed SS316L for its hydrogen embrittlement resistance. To this end, WAAM processed SS316L is charged with hydrogen. Subsequently, the implications of the microstructural features specific to fusion additively manufactured SS316L for its mechanical behavior in hydrogen rich environments are discussed. A crystal plasticity-coupled hydrogen adsorption diffusion model is used to describe the hydrogen-microstructure interaction of different WAAM fabricated 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? |
Definite: Post-meeting proceedings |