| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
The Influence of Molybdenum Additions on the Mechanical and Microstructural Properties of Medium-Mn Steels |
| Author(s) |
Felisters Zvavamwe, Jubert Pasco, Kudakwashe Nyamuchiwa, Minkyu Paek, Clodualdo Aranas |
| On-Site Speaker (Planned) |
Felisters Zvavamwe |
| Abstract Scope |
The automotive industry faces the challenge of enhancing fuel efficiency while meeting global environmental regulations on emissions. Advanced high-strength steels (AHSS) have gained significant attention due to their superior strength and ductility compared to conventional steels. Among AHSS, medium-manganese steels, containing 3-12 wt.% Mn and classified as third-generation AHSS, are of great interest. This study explores the impact of alloying with molybdenum on the mechanical and microstructural properties of medium-manganese steels, which rely heavily on the amount and stability of retained austenite. Five medium-manganese steels with 0, 0.05, 0.1, 0.2, and 0.25 wt.% molybdenum were investigated. Microstructure development and element distribution were extensively analyzed using EDS and EBSD techniques, with emphasis on austenite parent grain reconstruction. The results revealed a dual-phase microstructure of austenite and martensite, with Mn partitioning to austenite evident in all steels. Overall, molybdenum addition resulted in higher tensile strength. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Phase Transformations |