纳米稀土复合增塑剂对Al-Mg-Si合金组织和挤压性能的影响  

Effect of nano rare earth composite plasticizer on the microstructure and extrusion property of Al-Mg-Si alloy

作　　者：罗贵清 李浩楠 朱世安 刘小龙 LUO Guiqing;LI Haonan;ZHU Shian;LIU Xiaolong(Guangdong Haomei New Material Co.,Ltd.,Qingyuan 511540;Guangdong Haomei Technology Innovation Research Institute Co.,Ltd.,Qingyuan 511540,China)

机构地区：[1]广东豪美新材股份有限公司,广东清远511540 [2]广东豪美技术创新研究院有限公司,广东清远511540

出　　处：《铝加工》2025年第1期25-31,共7页Aluminium Fabrication

基　　金：清远市2022年省科技专项资金(“大专项+任务清单”)项目(2022DZX006)。

摘　　要：采用金相显微镜、扫描电子显微镜和拉伸试验机研究了纳米稀土复合增塑剂对Al-Mg-Si系铝合金挤压性能的影响。研究结果表明,微量的纳米稀土复合增塑剂可改善晶粒形核和第二相的生长,细化晶粒和第二相,提高Al-Mg-Si合金的变形性能;有利于复杂截面形状的挤压成形,提高合金的加工效率,并改善型材表面质量。与未添加增塑剂的铝合金相比,在相同挤压条件下,添加纳米稀土复合增塑剂的合金的挤压效率更高,验证了其对铝棒的增塑作用。The effects of nano rare earth composite plasticizer on the extrusion property of Al-Mg-Si aluminium alloys were studied by metallurgical microscope,scanning electron microscope and tensile testing machine.The results show that the nano rare earth composite plasticizer can improve the growth of grain nucleation and second phase,refine the grain and second phase,and improve the deformation performance of Al-Mg-Si alloy.It is conducive to the extrusion forming of complex cross-sectional shapes,improving the processing efficiency of alloys and improving the surface quality of profiles.Compared with the aluminium alloy without plasticizer,the extrusion efficiency of the nano rare earth composite plasticized alloy can be improved under the same extrusion conditions,so as to verify its plasticizing effect on aluminium rods.

关 键 词：纳米稀土 AL-MG-SI合金 挤压效率 表面质量 

分 类 号：TG146.21[一般工业技术—材料科学与工程]