About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
Presentation Title |
Understanding Hydrogen Embrittlement Effects on the Deformation Mechanisms in Developmental Austenitic Steels |
Author(s) |
Quinten Yurek, Po-Cheng Kung, Hoon Lee, James Stubbins, Brian Somerday, Petros Sofronis, Tsuchiyama Toshihiro, Jessica Krogstad |
On-Site Speaker (Planned) |
Quinten Yurek |
Abstract Scope |
In an effort to reduce the Ni content, and thus cost per kg of hydrogen resilient metals, we have investigated one commercial and four developmental austenitic stainless steels. Deformation microstructures are consistent across the novel and commercial alloys when tested under ambient conditions (room temperature, without hydrogen charging). However, deformation up to 10% strain of the same alloys subjected to hydrogen charging (138 MPa/300oC/816h) resulted in notable differences amongst the deformation microstructures as documented via SEM, EBSD, and TEM analysis. SEM and EBSD reveal intragranular cracking and deformation twinning in the high-Mn alloy. Furthermore, comparative analysis reveals differing degrees of slip localization and a correspondingly broader distribution of partial dislocation separation in hydrogen-charged alloys. This work provides important insight on the relationships between alloy composition and deformation behavior in the presence of hydrogen. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Sustainability, Other |