摘要
研究不同脉冲频率对A6N01铝合金焊接接头焊缝成形、微观组织的影响。结果表明,不同的脉冲频率对焊缝成形、缺陷无明显影响;不同脉冲频率焊接接头的焊缝微观组织均为典型树枝状晶组成的铸态组织,熔合区靠近焊缝一侧为柱状晶组织,靠近基体一侧为等轴晶组织,热影响区部分晶粒较母材晶粒粗大;母材为典型的再结晶组织。可以考虑选择不同的脉冲频率进行焊接。
The influence of different pulse frequency on the weld formation and mierostruetnre of A6N01 aluminum alloy welded joint is studied. The results show that the different pulse frequencies have no obvious influence on the fonnation and defects of the weld. The mierostructure of weld joints with different pulse frequency is typical dendritic strueture. The fusion zone is columnar structure near the weld side,and the other side is equiaxed crystal near the base. The grain size of beat affected zone is larger than that of parent metal. The parent material is a typical reerystallized tissue. It can be considered to choose different pulse frequencies for wehling.
作者
张向钧
陈刚辉
丁志成
ZHANG Xiangjun,CHEN Ganghui, DING Zhicheng(CRRC Guangdong Co., Ltd.,Jiangmen 529100, China)
出处
《电焊机》
2018年第3期139-144,共6页
Electric Welding Machine
