Er、Zr微合金化对Al-Zn-Mg合金组织及性能的影响  

Effect of Er and Zr microalloying on microstructure and properties of Al-Zn-Mg alloy

作　　者：刘阳 吴晓蓝 饶茂 毛雪晶 高坤元 魏午 熊湘沅 黄晖[1] Liu Yang;Wu Xiaolan;Rao Mao;Mao Xuejing;Gao Kunyuan;Wei Wu;Xiong Xiangyuan;Huang Hui(Key Laboratory of Advanced Functional Materials,Education Ministry of China,Beijing University of Technology,Beijing 100124,China;Southwest Aluminum(Group)Co.,Ltd.,Chongqing 400000,China)

机构地区：[1]北京工业大学新型功能材料教育部重点实验室,北京100124 [2]西南铝业(集团)有限责任公司,重庆400000

出　　处：《金属热处理》2023年第4期18-22,共5页Heat Treatment of Metals

基　　金：国家重点研发计划(2021YFB3704204,2021YFB3700902,2021YFB3704205);国家自然科学基金(51621003);北京市自然科学基金(2202009)。

摘　　要：研究了Er、Zr元素的添加对Al-Zn-Mg合金的微观组织、力学性能和腐蚀性能的影响。结果表明,Er、Zr元素的复合添加可以使合金的硬度、强度以及抗腐蚀性能有明显提高。Er、Zr元素的添加形成了弥散分布的纳米级Al3(Er, Zr)析出相,阻碍位错运动和晶界迁移,使合金的强度得到明显提高。另外,Er元素的添加使合金的晶粒细化,既提高了强度也保证了一定的伸长率,还使合金具有良好的抗剥落腐蚀性能。Effects of Er and Zr addition on microstructure,mechanical properties and corrosion properties of Al-Zn-Mg alloy were studied.The results show that the composite addition of Er and Zr can significantly improve the hardness,strength and corrosion resistance of the alloy.With the addition of Er and Zr elements,nano-sized Al3(Er,Zr)precipitates are dispersed in the matrix,which can hinder dislocation movement and grain boundary migration,and significantly increase the strength of the alloy.In addition,the addition of Er element refines grain of the alloy,which not only increases the strength,but also guarantees a certain elongation,and makes the alloy also have good anti exfoliation corrosion performance.

关 键 词：AL-ZN-MG合金 微合金化 微观组织 力学性能 耐腐蚀性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]