Effect of Ce on microstructure, mechanical properties and corrosion behavior of high-pressure die-cast Mg-4Al-based alloy

▶ High-pressure die-casting was carried out on Mg-4Al-xCe-0.3Mn alloys. ▶ Fine microstructure was obtained due to extremely high cooling rate and constitutional supercooling effect of Ce and Al. ▶ Al-Ce strengthening phases were characterized in detail. ▶ Optimized alloy composition and improved mechanical properties of HPDC Mg-4Al-xCe-0.3Mn alloys were obtained.