焊管2026，Vol.49Issue(5)：15-23,9.DOI:10.19291/j.cnki.1001-3938.2026.05.003
搅拌摩擦沉积固相增材制造6061铝合金组织与性能研究
Microstructure and Properties of 6061 Aluminum Alloy in Solid-state Additive Manufacturing via Additive Friction Stir Deposition
摘要
Abstract
To explore the effects of build direction on microstructure and mechanical properties of 6061 aluminum alloy during solid-state additive friction stir deposition(AFSD),6061-T6 aluminum alloy rods were adopted as raw materials,and deposited samples were fabricated by the AFSD process.Samples were extracted along the parallel deposition direction(xoy forming surface)and vertical deposition direction(yoz forming surface),respectively.Scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS)and electron backscatter diffraction(EBSD)were used to analyze the types and distribution characteristics of precipitated phases under different build orientations,as well as the differences in microstructure and mechanical properties.The results reveal that under optimized process parameters,6061 aluminum alloy samples fabricated by AFSD possess favorable forming performance and excellent densification.There is no obvious difference in microstructure between xoy and yoz forming surfaces.The dominant grain sizes range from 3 μm to 6 μm,and both grain boundary morphology and crystallographic orientations present random distribution.The mechanical strength exhibits obvious isotropic behavior,and the difference in elongation originates from the statistical distribution of microdefects,rather than texture-induced directional anisotropy.The results provide reliable data support for further understanding the mechanical behavior of aluminum alloys fabricated by AFSD solid-state additive manufacturing,and supply valuable guidance for improving the forming quality of this process.关键词
搅拌摩擦沉积/6061-T6铝合金/构建方向/显微组织/力学性能Key words
AFSD/6061-T6 aluminum alloy/build direction/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
王怀慎,董鹏,郭佩宏,汪卓然,柴斐,孙美春,田胜云..搅拌摩擦沉积固相增材制造6061铝合金组织与性能研究[J].焊管,2026,49(5):15-23,9.基金项目
山西省重点研发计划"钛合金水下运载平台的先进焊接与质量控制"(项目编号202302150401001). （项目编号202302150401001）
