| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-102: Electrochemical and Mechanical Characterization of Hydrogen Embrittlement in PH Nickel Alloys |
| Author(s) |
Yousif Al Rabie |
| On-Site Speaker (Planned) |
Yousif Al Rabie |
| Abstract Scope |
Hydrogen embrittlement (HE) is a significant challenge for PH nickel alloys, widely used in hydrogen-rich environments in the oil and gas industry. This study examines HE in Alloys 945, 945X (140 ksi and 150 ksi), 925, and 725 through electrochemical and mechanical testing. Diffusion coefficients and trapping behavior were quantified using a Devanathan cell, revealing key insights into hydrogen permeation and reversible trapping sites. Slow Strain Rate Testing (SSRT) with in-situ hydrogen charging assessed mechanical degradation under applied stress.
In-situ charging provided continuous hydrogen supply, simulating real-world conditions more effectively than pre-charging methods. The combination of quantified diffusion data and SSRT results revealed a significant reduction in plasticity under hydrogen exposure, highlighting alloy susceptibility to embrittlement.
Future work will explore additional PH nickel alloys and the role of microstructural features in embrittlement resistance, contributing to strategies for mitigating or minimizing HE-related failures in critical applications. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Environmental Effects, Characterization, Other |