| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Alloy design of low carbon low alloy carbide free bainitic-ferrite steel |
| Author(s) |
B Mohan Rao, Shiv Brat Singh |
| On-Site Speaker (Planned) |
B Mohan Rao |
| Abstract Scope |
In this study, an effort has been made to replace the traditional heat treatment cycle, which typically involves quenching from the austenitization temperature followed by tempering, straightening, and stress relieving, with a single-step air cooling process. This alternative heat treatment method aims to reduce production and labour costs. The study began with the design of an alloy based on five key parameters: hardenability, strength, critical temperature (TC) and Tο composition for Fe3C precipitation (Cο), weldability, and the combination of alloying elements. The designed alloys resulted in a microstructure of granular-like carbide-free bainitic ferrite with a small amount of retained austenite. The continuously cooled steel developed through this approach exhibited superior properties compared to ferritic-pearlitic steels. Detailed characterization and quantification of microstructural constituents were conducted and correlated with tensile properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Iron and Steel, Copper / Nickel / Cobalt |