About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Effect of Pre-Strain and Carbide Morphology on Hydrogen-Related Fracture Behavior in Tempered Martensitic Steels |
| Author(s) |
Eri Nakagawa, Kazuho Okada, Taisuke Sasaki, Akinobu Shibata |
| On-Site Speaker (Planned) |
Eri Nakagawa |
| Abstract Scope |
One of the most serious issues with social implementation for high-strength steels is hydrogen embrittlement (HE), which is a phenomenon that steel becomes very brittle due to the existence of hydrogen. Although plastic forming processes such as rolling are essential for the commercialization of steels, their effect on HE remains poorly understood. In this study, the effect of pre-strain on hydrogen-related fracture behavior was investigated for tempered martensitic steels with typical precipitated carbides, epsilon carbide and cementite. A Fe-3Mn-2Si-0.2C (wt.%) as-quenched martensitic steel was tempered at 300 to 500 ℃ for 400 to 1000 min, followed by cold rolling (reduction: 0 to 30%). Before cold rolling, tempered martensitic steel with epsilon carbide showed better resistance against HE than that with cementite. In contrast, the HE resistance was reduced by cold rolling in tempered martensitic steel with epsilon carbide, while cold rolling improved the HE resistance in cementite-precipitated martensitic steel. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Other, |