About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Role of relative amount of Ni and Mn on chemical and mechanical stability of austenite in δ-ferrite containing medium-Mn steels |
| Author(s) |
Navanit Kumar, Tapas Kumar Bandyopadhyay |
| On-Site Speaker (Planned) |
Navanit Kumar |
| Abstract Scope |
In the present work, three different compositions Fe-(6, 5, 4)Mn-(0, 1, 2)Ni-3Al-1Si-0.2C have been intercritically annealed at 750 °C for 120 s, 600 s, 1800 s, and 3600 s after hot rolling. 6Mn0Ni exhibits higher retained austenite than 5Mn1Ni and 4Mn2Ni. The product of strength and total elongation is more than 50 GPa% in the case of 6Mn0Ni and 4Mn2Ni alloys. Whereas, 5Mn1Ni shows reduced values at around 45 GPa%. The chemical stability of austenite is understood by diffusion simulation. Interrupted tensile testing is conducted to understand the kinetics of transformation-induced plasticity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Mechanical Properties, Characterization |