The effects on microstructures and properties of 2219 aluminum alloys under different aging temperatures and time were investigated.According to the mechanics properties of 2219 aluminum alloys,three compound technologies were compared,including FSW-solid solution-aging,solid solution-FSW-aging and solid solution-aging-FSW.The results show that the tensile strength and elongation rate of the alloys are as 386 MPa and 24.8%respectively after aging at 180℃/6 h.It is also found that the very fineθ″precipitates...