Er对Al-Mg-Si-Zr-Er合金(T4态)板材性能的影响  

Influence of Er on Properties of Al-Mg-Si-Zr-Er(T4)Alloy Sheets

作　　者：赵倩 高艳[1] 袁晓光[2] 黄宏军[2] Zhao Qian;Gao Yan;Yuan Xiaoguang;Huang Hongjun(School of Mechanical Engineering,Yangzhou Polytechnic College;School of Materials Science and Engineering,Shenyang University of Technology)

机构地区：[1]扬州市职业大学机械工程学院 [2]沈阳工业大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2023年第10期1395-1399,共5页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51875365);江苏省科技副总项目(FZ20211306);扬州市“绿扬金凤”计划优秀博士资助项目;扬州市职业大学中青年学术带头人科学项目。

摘　　要：通过常温拉伸性能测试、硬度测试、ODF图、OM、SEM、TEM及EDS等分析,研究了Er对Al-Mg-Si-Zr-Er合金(T4态)组织和性能的影响,并解释了Er的作用机制。结果表明,随着Er含量增加,合金强度和硬度均增加,伸长率降低,平面各向异性降低,晶粒细化,织构强度变弱,再结晶形核机制改变;Al-Mg-Si-Zr-Er合金(T4态)主要织构为Brass{110}<112>织构;Er的加入起到了细晶强化、抑制再结晶、降低铝合金层错能及减弱合金变形时的平面滑移所引起的局部应变集中的作用。Effects of Er content on microstructure and properties of Al-Mg-Si-Zr-Er(T4)alloy sheets were investigated by tensile testing,micro-hardness test,ODF,OM,SEM,TEM and EDS analysis,and the mechanism was also analyzed.The results indicate that as Er content increases,the strength and microhardness of the T4treated alloy are enhanced,while the elongation and in-plane anisotropy are decreased.Moreover,the grain is refined,the texture intensity is weakened and recrystallization nucleation mechanism is also tranformed.The texture of Al-Mg-Si-Zr-Er alloy is dominated by Brass{110}<112>.The addition of Er plays a role of refining grain,inhibiting recrystallization process,and reducing stacking fault energy as well as local strain concentration caused by plane slipping during deformation.

关 键 词：Al-Mg-Si-Zr-Er合金板材 ER T4处理 织构 各向异性 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG335.5[金属学及工艺—金属材料]