Effect of Ce on the Microstructure and Corrosion Resistance of Al-5Mg-3Zn-1Cu Alloy

The effects of different Ce content on the microstructure and corrosion resistance Al-5Mg-3Zn-1Cu alloy in metal mold gravity casting were studied this paper. was characterized by scanning electron microscope (SEM) X-Ray diffractometer (XRD). corrosivity all alloys 3.5 wt.%NaCl solution electrochemical immersion techniques. results show that is mainly composed α-Al, T phase, Al2Cu phase. can refine organization alloy, but when addition higher than 0.25 wt.%, a massive Ce-rich phase appears alloy. potential polarization test increases obviously from −1.253 V to −1.193 with increase