采用电化学测试，Ｘ射线衍射和俄歇深度分析研究了残余应力对ＢＦｅ３Ｏ－１－１铜镍合金管在３．５％ＮａＣｌ溶液内浸泡过程中形成的表面膜及其稳定性的影响．结果表明，一种管材压缩、拉伸残余应力沿层深交替出现，起伏变化较大；另一种管材残余应力较小，且分布平稳．前者形成的表面膜易脱落，无镍的富集；后者的表面膜中富镍，且与基体粘附力较强． The effects of residual stress on the surface films and the stability of BFe3O-1-1 Cu-Ni alloy tube immersed in 3.5% NaCl solution were investigated by electrochemical tests, X-ray diffraction and Auger depth analysis. The results show that the compressive strength and the residual tensile stress of the pipe alternate alternately along the depth of the pipe, and the variation of undulation is larger. The residual stress of the other pipe is smaller and the distribution is stable. The former formed a surface film easy to fall off, no enrichment of nickel; the latter surface nickel-rich film, and strong adhesion with the substrate.