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2 两种板材的晶粒组织参数统计结果
Table 2 Grain structures of two test sheets
Alloys

Size along RD of recrystallized grains

/μm

Size along ND of recrystallized grains

/μm

Recrystallized fraction

/%

SGBs fraction /%

GBs fraction

/%

Al-Zn-Mg-Mn21.6±11.810.7±2.81005.8±1.094.2±1.4
Al-Zn-Mg-Mn-Zr17.6±4.19.3±1.969.4±9.337.9±9.462.1±18.5