一、前言腐蚀疲劳是构件在腐蚀环境下受循环应力作用所产生的一种破坏。在实际生产中,绝大部分构件是在腐蚀疲劳条件下工作的。如:柴油机的气门、船舶的螺旋浆等。实验指出:它们的破断不仅和成份、热处理状态有关,而且利它们的工作环境也有关。有人指出:有的介质能加速疲劳裂纹的扩展,有的介质能抑制疲劳裂纹的扩展。目前还未定论。因为裂纹在扩展过 First, the preface Corrosion fatigue is a component in the corrosive environment caused by the role of cyclic stress damage. In actual production, most of the components are working under the conditions of corrosion fatigue. Such as: diesel valve, the ship’s propeller and so on. Experiments show that: their broken not only with the ingredients, heat treatment status, but also their working environment is also relevant. It was pointed out: Some media can accelerate the expansion of fatigue cracks, and some media can inhibit the expansion of fatigue cracks. Not yet conclusive. Because the crack is expanding