Laser-TIG arc hybrid welding technology of 6005A aluminum alloy with filler wire

被引：0

作者：

Yang, Dawei ^{[1
]}

Chen, Shuhai ^{[1
]}

Huang, Jihua ^{[1
]}

Feng, Xiaosong ^{[2
]}

Lu, Hao ^{[3
]}

机构：

[1] School of Materials Science and Technology, University of Science and Technology Beijing, Beijing,100083, China

[2] Shanghai Aerospace Eeuipments Manufacturer, Shanghai,200245, China

[3] CRC Qingdao Sifang Co., LTD, Qingdao,266111, China

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2017年 / 38卷 / 10期

关键词：

Tensile strength - Aluminum alloys - Fillers - Laser beam welding - Gas welding - Fracture - Seam welding;

D O I：

10.12073/j.hjxb.20151216001

中图分类号：

学科分类号：

摘要：

6005A aluminum alloy which is used for high-speed vehicle was welded by a new technology of laser-TIG arc hybrid welding with filler wire. According to the research of hybrid welding process, microstructure of the joints, mechanical properties, fracture morphology and welding hot cracking, welding process was relatively stable and welding appearance were perfect when laser power was in the range of 2 000 W to 3 000 W, TIG current was 150-195 A, welding speed was 0.4~0.8 m/min. Welding zone was composed of columnar grains in the edge of welding seam and equiaxed grains in the center of welding seam. The average tensile strength of joint was about 193.39 MPa and joint tensile strength increased with the increase of penetration ratio. In addition, the maximum tensile strength was about 205 MPa-70% of the strength of base metal when penetration ratio was 0.7. © 2017, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.

引用

页码：51 / 54