About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Materials Science
|
| Presentation Title |
Interfacial Microstructure Development and Oxide Thickness Effects in Flux-assisted Roll Bonding |
| Author(s) |
Eileen Hung, Ekin Senvardarli, Cemal Tasan |
| On-Site Speaker (Planned) |
Eileen Hung |
| Abstract Scope |
Hot roll bonding of steel scrap has been proposed as a recycling method. More recently, use of fluxing agents has been demonstrated as an easier way to remove oxides between sheets to improve the metallurgical bond. However, different microstructural features relative to the bulk have been observed at the bonded interface. In this presentation we investigate this microstructure development using SEM-BSE, SEM-EBSD, and TEM for microstructure imaging, as well as SEM-EDS, TEM-EDS, and EPMA for composition characterization. Between experimental characterization and computational Thermo-Calc DICTRA simulations, we hypothesize that the interfacial microstructure was caused by elemental diffusion away from the austenite and into the slag during preheating. Furthermore, controlling the oxide layer (thickness, composition) via extended prior heat treatments was also shown to change the interfacial microstructure prominence. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Characterization, Recycling and Secondary Recovery |