About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Materials and Systems for a Hydrogen Economy
|
| Presentation Title |
Evaluating Hydrogen Embrittlement Resistance in Line Pipe Steels using Double Cantilever Beam Test |
| Author(s) |
Amrita Bag, Syed Alam, Shaojie Chen, David L. Sponseller, Muhammad Rashid, Muhammad Arafin |
| On-Site Speaker (Planned) |
Amrita Bag |
| Abstract Scope |
Line pipe steels face ongoing challenges in reliable quantification of hydrogen embrittlement resistance in both sour service (wet H₂S) and gaseous hydrogen environments. Despite their critical role in hydrogen transport infrastructure, current standards offer limited and often overly conservative guidance, with no widely accepted, quantitative method for evaluating susceptibility to hydrogen-assisted fracture. This study explores adapting the Double Cantilever Beam (DCB) test, traditionally used for sour service tubulars, to line pipe steels, while also evaluating necessary modifications to enable its application in gaseous hydrogen environments.
Tests were conducted on two steels with similar strengths but different microstructures. Effects of key test variables such as wedge thickness, notch type, and test duration were evaluated. Complementary SEM fractography and finite element modeling provided insights into deformation behavior and test validity requirements. The results aim to support the development of more rigorous, microstructure-sensitive protocols for assessing hydrogen degradation resistance in line pipe steels. |