Abstract Scope |
Characteristic and mechanical properties, microstructures including transformation of phases, textures, and formability of hotband annealed of a continuous casting (CC) Al-1.5Cu alloy by using tensile machine, optical & scanning electronic microscopes and X-ray diffraction method were evaluated and studied overall. In addition, the different phases formed during heating were determined by DSC technology. Compared with AA2024, Si and Fe of the alloy were controlled at same level; Mn and Mg were controlled at low limit of AA2024 alloy; Cu is selected at low level (1.1-2.2%). Compared to hotbands of AA5xxx and AA3xxx alloys, characteristic after annealing at different temperatures of the hotband is very different with some interesting findings. The findings would affect potentially and importantly subsequent processing (such as cold rolling, solid solution heat treatment, quenching, forming, and aging) for application (replace AA5xxx-O sheet) in high strength and low-cost auto forming parts and sheets. |