About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technology 2026: Advancement in Energy Materials - Theory, Simulation, Characterization, Application
|
| Presentation Title |
Enhanced strength and ductility of medium Mn steels via multi-microalloying and its hydrogen embrittlement resistance |
| Author(s) |
Minghui Cai |
| On-Site Speaker (Planned) |
Minghui Cai |
| Abstract Scope |
Advanced high-strength steels, such as medium Mn steels are often compositionally and microstructurally complex. While this complexity enables the activation of multiple strengthening mechanisms, it also leads to a complicated damage behavior, especially in the presence of hydrogen. This study investigates the effect of Ti-Mo-xV microalloying on the HE resistance and fracture behavior of warm-rolled medium Mn steels. Ti-Mo-xV microalloying was proposed to further enhance the strength and ductility of medium Mn steels, the yield strength (YS) increment of 5.6MnTiMo steel reached 240~440 MPa as compared with 5.6Mn steel. The results indicate that the limited (Ti, Mo, V)C carbides precipitated in 𝛾R act as irreversibly trap sites, capturing significant hygrogen and effectively increasing its trapping capacity. Furthermore, 5.6MnTiMoVx displayed greater 𝛾R stability, reducing HE susceptibility. The role of Ti-Mo-xV microalloying in medium Mn steels and its effects on the strengthening and hydrogen embrittlement mechanisms were also revealed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Characterization, Mechanical Properties |