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研究无搭接激光单道扫描方式对材料局部应力集中部位进行表面改性及其对疲劳裂纹萌生抗力的影响。探讨了不同改性工艺条件下疲劳裂纹萌生的方式和断裂的微观机制。
The effect of surface modification on localized stress concentration sites and its resistance to fatigue crack initiation was studied in a lapped laser single pass scanning method. The way of fatigue crack initiation and the microscopic mechanism of fracture under different modification conditions are discussed.