| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Warm rolling for enhanced strength-ductility and yielding behavior in low-density, medium-Mn steels |
| Author(s) |
Tomas Scuseria, Dean Pierce, Kelcey Garza, Amy Clarke, Kester Clarke |
| On-Site Speaker (Planned) |
Tomas Scuseria |
| Abstract Scope |
Warm rolling of medium-Mn steels has been increasingly investigated as a pathway to enhanced mechanical properties via grain refinement, increased defect contents, and microstructural heterogeneity. In this work, warm reduction at temperatures between 400 and 750 °C was investigated in low-density, medium-Mn steels (7–9Mn, 4–6Al, 0.2–0.3C and 0–1Si and Cr (wt%)). Exceptional tensile strength-ductility combinations (up to 1380 MPa, 16.5% elongation) in select warm-rolled conditions were attributed to dislocation strengthening of typically softer ferrite+austenite constituents, partial recrystallization, and suppressed austenite decomposition during rolling. Additionally, observed continuous yielding in select specimens served to shed some light on elusive mechanisms responsible for yield point elongation in sheet steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Phase Transformations, Mechanical Properties |