Abstract
Scandium containing Al-Mg alloys exhibit significant potential for use in aerospace applications, such as air frames and stiffened panels. Zirconium additions further improve the room temperature (RT) workability, elevated temperature resistance and mechanical properties of these alloys. In this study, the capability of the Horizontal Single Belt Strip Casting (HSBC) technology for casting and processing of Al-Mg-Sc-Zr alloys was investigated. The alloys were strip cast on the horizontal single belt strip caster located in McGill’s Metals Processing Centre (MMPC). Detailed micro-structural characterization of strip-cast Al-Mg-Sc-Zr alloys was conducted via Optical Microscopy (OM), Scanning Electron Microscopy (SEM), and Electron Backscatter Diffraction (EBSD). Additionally, the surface quality of strips was evaluated via 3D profilometry measurements and analyses. Finally, mechanical properties of the cast strip products were evaluated and compared with equivalent cast alloy structures associated with the slower cooling rates specific to direct chill (DC) casting.
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