| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Nano-scale Precipitate Evolution, Localization and Phase Transformations in Ni Alloyed Fe-Mn-Al-C Steel – A Correlative Microscopy Study |
| Author(s) |
K. G. Pradeep, Sadhasivam Murali |
| On-Site Speaker (Planned) |
Sadhasivam Murali |
| Abstract Scope |
The presence of Al in Fe-Mn-C based multi-component steels induces precipitate formation whose size, number density etc can be varied depending on the thermomechanical processing conditions. Further alloying of such steels with Ni promotes the formation B2 precipitates. This work attempts to analyze correlatively the structure of nano-scale precipitates formed in a duplex (i.e. FCC matrix and embedded BCC precipitates) steel along with their precise local chemical composition in a high statistical manner.
To achieve the above, a custom designed correlative microscopy platform was utilized in a Scanning Electron Microscope enabling imaging in transmission geometry combined with transmission Kikuchi diffraction for structure analysis while the precise local chemical composition was obtained using Atom Probe Tomography. This correlative methodology applied to hot rolled and annealed conditions, provided deeper insights into the role of starting microstructures on the precipitation kinetics and hence on the final mechanical properties of the steel. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Mechanical Properties, Other |