| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
Microscopic Characterization of Hydrogen Distribution and Hydrogen Embrittlement in Steels |
| Author(s) |
Eason (Yi-Sheng) Chen |
| On-Site Speaker (Planned) |
Eason (Yi-Sheng) Chen |
| Abstract Scope |
The presence of hydrogen in metallic materials can cause a catastrophic early fracture known as hydrogen embrittlement. Observing the hydrogen and its associated influences in microstructure has been a grand challenge that limits the development of a solution to this problem. To this end, my research group have developed a unique tool, cryogenic atom probe tomography (cryo-APT), for hydrogen mapping. This tool involves the use of a dedicated cryogenic workflow inspired by cryogenic electron microscopy. In addition, we correlated our cryo-APT results with an in-situ micromechanical approach in a scanning electron microscope to investigate hydrogen embrittlement mechanisms in steels. Our efforts have led to new insights for deciphering hydrogen trapping and embrittling mechanisms, facilitating the development of the steel microstructure with good resistance to hydrogen embrittlement. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, Mechanical Properties |