利用激光熔化沉积技术，在TA15合金基板上制备TA15/Ti2AlNb双合金薄壁试样，分析沉积态和热处理态TA15/Ti2AlNb双合金微观组织及相组成，对双合金在室温下的力学性能进行测试。结果表明，沉积态TA15/Ti2AlNb双合金具有良好的力学性能，室温抗拉强度为1096 MPa，延伸率为5.2%，断裂位置位于过渡区；热处理态双合金室温抗拉强度为1053 MPa，延伸率为3.2%，断裂位置位于TA15合金侧；沉积态TA15/Ti2AlNb双合金从TA15合金侧到Ti2AlNb基合金侧相的转变依次为α和β相，α、α2和β/B2相，α2、β/B2和O相及α2、B2和O相。

Thin wall TA15/Ti2AlNb dual alloy samples are prepared on the TA15 alloy substrate by using laser melting deposition technology. The microscopic structure and phase composition of as-deposited and heat treated TA15/Ti2AlNb dual alloy are analyzed, respectively, and the mechanical property of dual alloy at room temperature is tested. The results show that the as-deposited TA15/Ti2AlNb dual alloy possesses a good mechanical performance with a tensile strength of 1096 MPa, an elongation of 5.2%, and the fracture position is located in the transition zone. In contrast, as for the heat treated dual alloy, the tensile strength is 1053 MPa, the elongation is 3.2%, and the fracture position is located in the TA15 alloy side. As for the as-deposited TA15/Ti2AlNb dual alloys, the variation of the phase from the TA15 side to the Ti2AlNb side is in the order of α and β two-phase, α, α2 and β/B2 three-phase, α2, β/B2 and O three-phase, α2, B2 and O three-phase.