摘要
采用激光焊接与激光-氩弧焊复合焊接2种方式对厚度为2mm的3A21铝合金板材进行对接焊,研究2种焊接方式下焊接接头微观组织、缺陷分布及硬度分布的不同。实验结果显示激光-氩弧复合焊接接头相比激光焊的接头显微组织更细密,且气孔数量明显减少。激光焊接接头的平均显微硬度与复合焊接头平均显微硬度相差不大,分别为52HV左右及51.3HV左右,均明显高于基体平均显微硬度值43HV。
In this experiment,the effect of different bonding technology on welding point microstructure,flaw distribution and hardness distribution of 2 mm 3A21 aluminum alloy which were welded by laser welding and laser-argon arc welding was studied.The results showed that laser-argon arc welding microstructure was better than laser welding microstructure,and the air hole volume of laser-argon arc welding was obviously reduced.The micro-hardness of laser welding point was higher than laser-argon arc welding point,and the values were 52 HV and 51.3 HV respectively,they were all higher than the micro-hardness of matrix hardness which was 43 HV.
出处
《制造技术与机床》
CSCD
北大核心
2012年第3期109-112,共4页
Manufacturing Technology & Machine Tool
