对TA19钛合金进行不同温度（930，960，990℃）固溶2 h+不同温度（550，590，630℃）时效8，16 h热处理，研究了工艺参数对显微组织与拉伸性能的影响。结果表明：不同温度固溶+590℃时效8 h处理后，随着固溶温度的升高，试验合金中的等轴α相含量降低，抗拉强度增大。经960℃固溶2 h处理后，试验合金的组织由等轴α相和α'马氏体组成，在后续550℃时效8 h过程中，α'马氏体分解不充分，颗粒状α相含量较少，合金抗拉强度增加有限；当时效温度升高到590℃，时效时间分别为8，16 h时，组织中析出细小弥散的颗粒状α相，抗拉强度提高；继续升高时效温度至630℃时，α相粗化，抗拉强度又有所下降。

TA19 titanium alloy was treated by solid solution at different temperatures (930, 960, 990℃) for 2 h and then aging at different temperatures (550, 590, 630℃) for 8, 16 h. Effects of process parameters on microstructure and tensile property were studied. The results show that after solid solution at different temperatures and then aging at 590℃ for 8 h, the equiaxed α phase content in the test alloy decreased and the tensile strength was improved with the rise of solid solution temperature. After solid solution at 960℃ for 2 h, the microstructure of the test alloy was composed of equiaxed α phase and α' martensite. During the subsequent aging at 550℃ for 8 h, α' martensite decomposed unsufficiently, so the content of granular α phase was relatively small and therefore the tensile strength of the alloy increased limitedly. When the aging temperature rose to 590℃ and the aging time was 8 h and 16 h, fine and diffuse granular α phase precipitated in the microstructure, resulting in the increase of tensile strength. When the aging temperature continuously increased to 630℃, the α phase was coarsened and the tensile strength decreased.