About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Probing Environmentally-Assisted Cracking via Multi-Modal In-Situ Techniques |
| Author(s) |
Jiyun Kang, Andrew C. Lee, Adam C. Barsotti, Niccolo D. Lena, X. Wendy Gu |
| On-Site Speaker (Planned) |
Jiyun Kang |
| Abstract Scope |
Understanding the fundamentals behind environmentally assisted cracking (EAC) is challenging due to the complex interplay of multiple time-dependent processes, including the effects of hydrogen. A key research need is to correlate microstructural features with local failure events to identify dominant failure pathways. This talk presents a suite of in-situ characterization techniques to uncover EAC mechanisms at multiple stages. First, I will introduce the in-situ transmission X-ray microscopy to directly visualize dynamic crack propagation in hydrogen-embrittled Ni-based superalloys at the nano- to micro-scale. Second, I will highlight the use of Kelvin probe force microscopy to spatially resolve hydrogen distribution at phase interfaces with high resolution. Finally, recent advancements in in-situ Raman spectroscopy will be discussed, enabling the monitoring of early-stage corrosion product formation with near-atomic-layer resolution. Together, these complementary approaches provide new insights into the coupled roles of hydrogen and corrosion in material degradation, opening new pathways for designing EAC-resistant alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Characterization, Copper / Nickel / Cobalt |