About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Influence of Mn content on the microstructural evolution and deformation behavior of additively manufactured binary Fe-Mn alloys |
| Author(s) |
Shanmukha Satya Srinivas Guraja, Ravi Sankar Haridas, Rajiv Mishra, Tirthesh Ingale, Raj Banerjee |
| On-Site Speaker (Planned) |
Shanmukha Satya Srinivas Guraja |
| Abstract Scope |
This study investigates the effect of manganese content (5, 10, and 15 wt.%) on phase evolution, microstructure, and deformation behavior in additively manufactured (AM) binary Fe–Mn alloys. Fe-5Mn and Fe-10Mn exhibit single-phase BCC α′-martensite, while Fe-15Mn shows a multiphase structure with α′-martensite, ε-martensite, and retained austenite. High-resolution EBSD analysis of Fe-15Mn reveals a hierarchical transformation pathway governed by the Burgers orientation relationship: (0001)ε || (110)α′ and (11̅20)ε || (111)α′. Tensile testing indicates dislocation-mediated deformation in Fe-5Mn and Fe-10Mn, while Fe-15Mn displays enhanced strength and ductility through stress-induced transformations: ε-martensite → α′-martensite and austenite → α′-martensite. These findings underscore the role of Mn in stabilizing metastable phases and offer valuable insights for designing high-performance AM steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Phase Transformations |