Heat treatments for precipitation of scandium-containing dispersoids in an Si-containing aluminum alloys
Benefits of alloying Sc with aluminum resulting from the precipitation of coherent Al3Sc dispersoids, including refined microstructure, increased strength, and improved weldability, have been demonstrated for a number of commercial aluminum alloys. Historically interactions between Sc and Si have limited the benefits of Sc additions in Al-Mg-Si 6xxx alloys. The first step towards developing a Sc containing 6xxx-alloys requires studying the interaction between Si and Sc. Hence, this work characterizes the aging response associated with precipitation of Si-modified Al3Sc dispersoids in a Sc-containing Al-Si alloys. The work reported in this paper focuses on understanding the breakdown of the solid solution of Sc in Si-containing aluminum alloys. Results of this study can be used to define heat treatment schedules for scandium containing 6xxx alloys.
Light Metals 2019
Sanders, P. G.,
Wood, T. D.,
Heat treatments for precipitation of scandium-containing dispersoids in an Si-containing aluminum alloys.
Light Metals 2019, 1463-1467.
Retrieved from: https://digitalcommons.mtu.edu/materials_fp/203