| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advances in Materials and Systems for a Hydrogen Economy
|
| Presentation Title |
Modeling and Experimental Studies of Hydrogen Effects on the Materials Used for Storage and Transport |
| Author(s) |
Ting Yang, Guang Cheng, Wurong Jian, Yamini Mann, Toshio Nakamura, Wei Cai, Ming Dao, T. A. A. Venkatesh |
| On-Site Speaker (Planned) |
T. A. A. Venkatesh |
| Abstract Scope |
The successful realization of a hydrogen economy is crucially dependent on a comprehensive understanding of the effects of hydrogen on the hydrogen infrastructure materials and the development of hydrogen compatible materials with long term reliability. The ability of MD simulations to provide insights on the hydrogen-material interactions is highlighted with a million atom model that captures the interaction between dislocations and nano-scale precipitates in high strength steels which are used for storing and transporting hydrogen. The effects of hydrogen concentration, the nanoprecipitate size and phase structure, distance between nanoprecipitate, and dislocation length are systematically investigated. Furthermore, the phenomenon of hydrogen embrittlement in 304 stainless steels is examined through a comprehensive array of experimental techniques, including tensile, fatigue and nanoindentation tests. Modeling and experimental results provide valuable insights into the mechanisms underpinning hydrogen embrittlement in steels which can be helpful for engineering steels with enhanced hydrogen embrittlement resistance. |