| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
The less known impact of high temperature (> 400 °C) hydrogen induced degradation of steels and Ni-based alloys |
| Author(s) |
Rishi Pillai, Brandon Johnston, Marie Romedenne, Dean Pierce, J.A. Haynes |
| On-Site Speaker (Planned) |
Rishi Pillai |
| Abstract Scope |
Majority of the research on materials development and evaluation for the envisioned hydrogen-fueled energy landscape has focused on ensuring the safety and reliability of hydrogen pipelines and storage infrastructure. However, hydrogen-fueled power generation and transportation technologies, involve high temperatures (300-700 °C pre-combustion and > 800 °C post-combustion) and a mixture of corrosive environments (H2, O2 and H2O) and the role of these conditions has received limited attention in the literature. In the present work, steel (4140) and Ni-base (Hastelloy X, 282, R-41) alloy specimens were exposed in high temperature atmospheric pressure hydrogen (99.9999999% purity) between 450-800 °C for up to 500h. Post-exposure tensile testing was conducted at room temperature to quantify the impact on ductility. The observed results will be discussed with the help of microstructural characterization techniques and measured hydrogen uptake. Ultimately, a few preliminary results on the impact of higher pressures on the degradation behavior will be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, High-Temperature Materials, Mechanical Properties |