About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2026 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-98: Thermomechanical Processing of High Strength Austenitic FeMnAlC Steel |
| Author(s) |
Annika E. Bauman, Eric Lass |
| On-Site Speaker (Planned) |
Annika E. Bauman |
| Abstract Scope |
Austenitic high-strength Fe–Mn–Al–C steels are a promising but underexplored alloy class for structural applications requiring a combination of strength, weldability, and castability. Recent Navy work reports that the alloy Fe-17.7Mn-4.7Cr-0.48C-10Ni-5Al-4Cu reaches projected strengths of ~1100 MPa based on Vickers microhardness, exceeding the typical 300–400 MPa strength range of conventional austenitic steels. The high strength is attributed to the formation of nanoscale B2 and Cu-based precipitates. In the absence of established thermomechanical processing strategies for this alloy system, earlier work relied on conservative homogenization treatments lasting up to four days to achieve compositional uniformity, which promoted excessive grain growth. In this study, thermomechanical processing routes incorporating cold rolling are explored to develop foundational knowledge while reducing grain size through deformation-induced recrystallization. Vickers microhardness is used to track strength evolution throughout processing, while optical microscopy is used to evaluate grain size trends. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Other, Other, Other |