| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
New Frontiers in Physical Metallurgy of Steels
|
| Presentation Title |
Microstructural Engineering and Accelerated Test Method Development to Achieve Low Cost, High Performance Solutions for Hydrogen Storage and Delivery |
| Author(s) |
Kip O. Findley, John Speer, Lawrence Cho, Pawan Kathayat, Yuran Kong, Chris San Marchi, Brian Kagay, Samantha Lawrence, Joseph Ronevich, Ashok Saxena |
| On-Site Speaker (Planned) |
Kip O. Findley |
| Abstract Scope |
Hydrogen fueling infrastructure has a lack of low-cost options for storage, compressors, and dispensing components that are compatible with hydrogen. Reducing the costs could contribute to more extensive implementation of safe hydrogen fueling stations. Thus, we are designing alternative alloy options to achieve comparable hydrogen embrittlement resistance as higher cost austenitic stainless steels through analytical and computational approaches. Specifically, we are exploring both austenitic and duplex austenite-ferrite microstructures with manganese substitutions for nickel and other alloying additions to control stacking fault energy. Additionally, we are investigating microalloying approaches for grain size control, precipitation strengthening, and hydrogen trapping. Mechanical properties, including fracture toughness in hydrogen, are evaluated through in-situ electrochemical or gaseous hydrogen charging with the objective of comparing these two testing methodologies and enabling efficient and accessible accelerated testing for hydrogen embrittlement resistance. The role of alloying and microstructure on hydrogen transport and trapping is also being explored. |