微量Zr对Al-Zn-Mg-Mn合金板材抗剥落腐蚀性能的影响

柴文茹,陈景超,刘胜胆,叶凌英,林化强,张新明

Effect of Minor Zr Addition on Exfoliation Corrosion Resistance of Al-Zn-Mg-Mn Alloy Sheet

Wenru CHAI,Jingchao CHEN,Shengdan LIU,Lingying YE,Huaqiang LIN,Xinming ZHANG

表1 实验板材的化学成分

Table 1 Chemical compositions of two aluminum alloy sheets (%, mass fraction)

Alloys Zn Mg Cu Mn Zr Fe Si Al Al-Zn-Mg-Mn 4.29 1.23 0.15 0.29 0.00 0.16 0.09 Bal. Al-Zn-Mg-Mn-Zr 4.31 1.19 0.15 0.28 0.12 0.15 0.08 Bal.