本文研究了电镀硬铬层于三点弯曲时的损伤形态。根据其宏观形态和损伤程度对其进行了分类,并用SEM分析了各类损伤的微观特征,还初步分析了其损伤机制以及有关因素的影响规律。 In this paper, the damage morphology of hard chrome layer plating at three-point bending was studied. According to their macroscopic morphology and degree of damage, they were classified, and the microscopic features of all kinds of injuries were analyzed by SEM. The effects of the damage mechanism and related factors were also analyzed.