用激光云纹干涉法原位测量了应力腐蚀（ＳＣＣ）前后缺口前端位移场的变化并进行ＴＥＭ原位观察，结果表明，阳极溶 解能使块状试样缺口前端塑性区及其变形量增大当溶解促进的局部塑性变形发展到临界条件，就会导致ＳＣＣ微裂纹在无位错区中形 核α－Ｔｉ在甲醇溶液中表面钝化膜形成和保持过程中会在内界面产生较大的拉应力，它能协助外应力促进局部塑性变形，进而促进 ＳＣＣ裂纹形核 The change of the displacement front and back of the notch before and after stress corrosion (SCC) was measured by laser moire interferometry and observed by TEM. The results show that the anodic dissolution can increase the plastic zone and the deformation of the notch front of the massive specimen When the dissolution-promoted local plastic deformation to critical conditions, it will lead to SCC micro-cracks in the dislocation-free nucleation α-Ti in the methanol solution surface passivation film formation and maintenance process will produce a larger interface Tensile stress, it can help external stress to promote local plastic deformation, thereby promoting SCC crack nucleation