| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advances in Materials and Systems for a Hydrogen Economy
|
| Presentation Title |
Fatigue and Fracture of Structural Steels in Gaseous Hydrogen Environments |
| Author(s) |
Chris San Marchi, Milan Agnani, Robert W. Wheeler, Fernando D. Leon-Cazares, Brendan C. Davis, Joeseph A. Ronevich |
| On-Site Speaker (Planned) |
Chris San Marchi |
| Abstract Scope |
The design and operation of large-scale hydrogen infrastructure, such as storage vessels for gaseous hydrogen at pressures approaching 1,000 bar and pipelines operating at stresses near their yield strength, require comprehensive understanding of hydrogen-assisted fatigue and fracture phenomena. Hydrogen increases fatigue crack growth rates in most steels by an order of magnitude or more, and the fracture resistance of pressure vessel steels currently used for hydrogen transport and storage can be reduced by 50% or more. However, the influence of subtle testing parameters on measurement of these properties is underappreciated. In this brief presentation, we will review the performance of steels intended for use in gaseous hydrogen environments with emphasis on characterizing trends associated with important materials, environmental, and mechanical variables. Additionally important pitfalls and limitations of fracture mechanics measurements in gaseous hydrogen environments will be identified. |