耐候钢激光叠焊接头疲劳性能分析

Hot Working Technology(2020)

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Abstract
对采用优化的焊接参数焊接的3 mm+2.5 mm耐候钢激光叠焊接头的疲劳性能进行了实验,通过疲劳升降法确定了接头的中值疲劳强度,最终确定了激光焊叠焊接头脉动拉伸疲劳试验中值F-N曲线.同时对试件断口的宏观及微观断裂特征进行了详细分析.实验结果为轨道车辆的焊接生产提供工艺支撑.
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