摘要
为了研究激光-电弧复合焊不同引导方式对铝合金焊接成形质量的影响,采用YAG激光-MIG电弧复合热源对10mm厚5083铝合金板进行平板堆焊试验,并采用HANNOVER电弧分析仪、高速摄像机、金相显微镜等设备研究不同引导方式下焊缝宏观组织和微观组织的影响。研究表明,不同引导方式对焊缝成形有较大影响。电弧引导激光焊接(Arc-laser hybrid welding leading,AL)时,激光与电弧两热源的耦合效果好,焊缝截面成型良好,为典型的"蘑菇"状;激光引导电弧焊接(Laser-Arc hybrid welding leading,LL)激光电弧作用区主要为等轴细晶粒,AL为明显的等轴树枝晶和细小的等轴晶粒。同时二者接头焊缝中心硬度值均略低于焊缝中心到熔合线之间的硬度值。LL焊接较AL时熔池振荡严重,熔滴易呈爆炸倾向过渡。
In order to study different Laser-MIG Arc Hybrid Welding methods on the quality of aluminum alloy welding guide way, the YAG laser-MIG arc composite heat source to 10 mm thick plate welding experiment of 5083 aluminum alloy plate. And uses the HANNOVER arc analyzer, high speed cameras, metallographic microscope, equipment research weld macro- structure and microstructure under different leading way. Research shows, different ways to lead the formation of a greater im- pact on the welding. Arc-laser hybrid welding leading, the coupling effect of laser and arc heat source is good. Weld section forming well, for the typical ＂mushroom＂ shape. Laser-Arc hybrid welding leading. The laser-arc zone is mainly composed of equiaxed fine grains. AL method is obvious equiaxed dendrites and fine equiaxed grains. While the joint hardness of the two joints are slightly lower than the weld center to the weld line between the hardness value. LI. method welding pool than the AL serious oscillation, droplet prone to explosive tendency to transition.
出处
《应用激光》
CSCD
北大核心
2017年第2期229-233,共5页
Applied Laser
关键词
铝合金
激光-电弧复合焊接
引导方式
成形质量
aluminum alloy
laser-MIG arc hybrid welding methods
welding guide way
quality of form
