| Abstract Scope |
Enabling the use of scrap steels in short-flow steelmaking is critical for sustainable steel production, reducing energy consumption and dependency on virgin raw materials. However, repeated recycling can lead to the accumulation of residual elements, such as phosphorus, copper, and tin, which may affect the steels’ properties. This study investigates the impact of these elements on the microstructure and mechanical performance of recycled steels. Advanced characterisation techniques, including Electron Backscatter Diffraction (EBSD), Transmission Electron Microscopy (TEM), and Atom Probe Tomography (APT), are utilized to correlate microstructural features with properties like strength and ductility. EBSD maps grain boundary characteristics and texture, TEM reveals nanoscale precipitate distributions, and APT provides atomic-scale insights into element segregation. Additionally, we plan to assess hydrogen embrittlement susceptibility through controlled hydrogen charging and mechanical testing. Findings aim to optimize recycled steel production, enhancing sustainability and cost-effectiveness for hydrogen infrastructure. |