利用塑性势理论，同时通过各种复合应力试验证明了TA2钛管具有明显的各向异性和双向强化效应，并提供了钛管换热器合理设计的可靠依据． Based on the plastic potential theory, TA2 titanium tube has been proved to have obvious anisotropy and bi-directional strengthening effect through various composite stress tests. It also provides a reliable basis for the rational design of titanium tube heat exchanger.