采用XRD,SEM和TEM研究了TC16钛合金在700—900℃固溶后淬火的显微组织和相组成,以及淬火温度对拉伸性能的影响.结果表明,在700和750℃淬火,TC16钛合金由初生α相、亚稳β相和微量ω相组成;随着淬火温度的升高,合金出现了β→α″的马氏体相变;从β单相区淬火,合金由α″马氏体组成.拉伸实验表明,拉伸过程中亚隐组织试样出现应力诱发α″马氏体相转变,导致屈服强度降低. The microstructure and phase composition of TC16 titanium alloy after solution treatment at 700-900 ℃ and the effect of quenching temperature on the tensile properties were studied by XRD, SEM and TEM. The results show that after quenching at 700 and 750 ℃, The alloy consists of primary α phase, metastable β phase and trace ω phase. With the increase of quenching temperature, the alloy exhibits β → α “martensitic transformation. When quenched from β single phase, the alloy consists of α” horse Tensile tests show that stress-induced α "martensitic transformation occurs in the samples of the sub-hide tissue during the tensile process, resulting in the decrease of the yield strength.