About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Understanding Hydrogen Distributions in Advanced Steels by Using Atom Probe Tomography |
| Author(s) |
Eason Yi-Sheng Chen |
| On-Site Speaker (Planned) |
Eason Yi-Sheng Chen |
| Abstract Scope |
Hydrogen embrittlement in steels can cause catastrophic early fracture, posing significant challenges for structural applications in industries. The inability to precisely observe hydrogen within complex microstructures has hindered the development of effective mitigation strategies. Our research employs cryogenic atom probe tomography (cryo-APT) to map hydrogen distributions with nanoscale resolution, enabling detailed visualization of its interactions with microstructural features like grain boundaries, dislocations, and precipitates. By integrating cryo-APT with micromechanical analysis, we establish robust correlations between hydrogen localization and sites of either microstructural failure or beneficial trapping. This approach has provided novel insights into hydrogen trapping mechanisms and their role in embrittlement processes, revealing pathways to enhance material resilience. Our findings inform the design of steel microstructures with superior resistance to hydrogen-induced degradation, facilitating the development of high-strength, durable steels for critical applications. This work highlights the transformative potential of advanced characterization techniques in overcoming longstanding challenges in materials science. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Characterization, Sustainability |