About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Melt Processing, Casting and Recycling
|
Presentation Title |
4D synchrotron X-ray tomographic operando study and multiphysics modelling of the multiphase coupled growth in a recycled Al alloy during solidification under pulse magnetic fields |
Author(s) |
Ling Qin, Kang Xiang, Jiawei Mi |
On-Site Speaker (Planned) |
Ling Qin |
Abstract Scope |
In most recycled Al alloys, Fe is the most common and detrimental impurity element. Understanding the formation mechanism of Fe-intermetallics and the interaction mechanisms between solidifying phases and external fields during solidification is key. Here, we report on the in-situ 4D synchrotron X-ray tomographic quantification of multiphase growth behaviors in a high Fe-containing recycled Al-5Cu-1.5Fe-1Si alloy during pulse magnetic field (PMF) solidification. Our observations indicate that the initial morphology of Al-Fe intermetallics influences the eventual morphologies and distributions of Fe phases in the recycled Al alloy. Complementary multiphysics modeling was utilized to calculate the shear forces generated by PMF, leading to the transformation of Al dendrites and fragmentation of the cluster structure of Al-Fe intermetallics during solidification. These findings could provide insights into optimal strategies for removing Fe-intermetallics or modifying Fe-intermetallic phases into less detrimental morphologies in recycled Al alloys. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Recycling and Secondary Recovery, Modeling and Simulation |