Effects of Cr Addition on Microstructure and Mechanical Properties of Heat-Resistant Al-Cu-Mg Alloys
Al-7Cu-0.3Mg alloys with different Cr contents were prepared by melting and casting. The microstructure and tensile mechanical properties of the as-cast and T6 heat-treated alloys were investigated at room temperature and 350 °C. The results show that Cr addition not only significantly refines the primary α-Al grains a...