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利用三电极技术研究了Ａ５３７低合金钢在３．５％ＮａＣｌ活化体系中的低周腐蚀疲劳的裂纹萌生行为．结果表明，应变速率越小，或者应变幅越大，裂纹萌生寿命越短；阳极极化和强阴极极化可以大大缩短裂纹萌生寿命，阴极保护条件下的裂纹萌生寿命与空气中的相似．裂纹主要在软的铁素体内萌生，然后穿过珠光体连接．剧烈的阳极溶解破坏了表面形变形貌，阴极析氢导致表面产生许多小裂纹．
The crack initiation behavior of low cycle corrosion fatigue of A537 low alloy steel in 3.5% NaCl activation system was studied by three-electrode technique. The results show that the smaller the strain rate or the larger the strain amplitude, the shorter the crack initiation life. The anodic and cathodic polarization can shorten the initiation life of the crack, and the crack initiation life under cathodic protection is similar to that in air. Cracks mainly in the soft ferrite sprout, and then through the pearlite connection. Severe anodic dissolution destroys the surface deformation morphology, cathodic hydrogen evolution caused many small cracks on the surface.