热输入对铝合金双脉冲MIG焊接头性能的影响
Effect of line energy on properties of aluminum alloy joints in double pulsed MIG welding
-
摘要: 采用双脉冲MIG焊技术对6061-T6铝合金进行对接连接，研究热输入对焊接过程、接头显微组织结构及力学性能的影响. 结果表明，在一定热输入范围内，双脉冲MIG焊焊接过程稳定，飞溅极少，焊缝呈现为美观的鱼鳞纹. 热输入较小时，焊接接头存在明显的未熔合和气孔缺陷，造成抗拉强度较低. 随着热输入的增加，焊接接头的热影响区宽度和熔合区晶粒尺寸逐渐增大，未熔合和气孔缺陷减少，抗拉强度显著提高.Abstract: 1060-T6 aluminum alloy butt joints were obtained by double pulsed MIG welding technique. Effcet of line energy on welding process, the microstructures and mechanical properties of the joints were investigated. The results showed that the welding process of double pulsed MIG welding was stable with little spatter, and the weld appeared as beautiful fish scale, within a certain range of line energy. For lower line energy, the tensile strength of joint was lower because of incomplete fusion and gas pores. With an increase in line energy, the width of the heat-aected zone increased and grains in the fusion zone coarsened. Moreover, incomplete fusion and gas pores were gradually decreased, which was obviously improved the tensile strength of joint.
-
Keywords:
- double pulsed MIG welding /
- butt joint /
- line energy /
- tensile strength
-
-
[1] 阮 野, 邱小明, 宫文彪，等. 铝合金双丝MIG焊焊接接头组织与耐腐蚀性能[J]. 焊接学报， 2011, 32(2): 109-112.Ruan Ye, Qiu Xiaoming, Gong Wenbiao,et al. Microstructure and corrosion resistant performance of Al twin wire MIG weld hoint[J]. Transactions of the China Welding Institution, 2011, 32 (2): 109-112.[2] Sinhmar S, Dwivedi D K. Enhancement of mechanical properties and corrosion resistance of friction stir welded joint of AA2014 using water cooling[J]. Materials Science & Engineering A, 2017, 684: 413-422.[3] 曹淑芬, 陈铁平, 易 杰, 等. 铝合金双脉冲MIG 焊过程的温度及应力变形模拟[J]. 中国有色金属学报, 2014, 24(7): 1685-1692.Cao Shufen, Chen Tieping, Yi Jie,et al. Simulation of temperature, stress and deformation during double pulsed MIG welding of aluminum alloy[J]. The Chinese Journal of Nonferrous Metals, 2014, 24(7): 1685-1692.[4] 姚 屏， 薛家祥， 蒙万俊， 等. 工艺参数对铝合金双脉冲MIG焊焊缝成形的影响[J]. 焊接学报，2009, 30(03): 69-72.Yao Ping, Xue Jiaxiang, Meng Wanjun,et al. Influence of processing parameters on weld forming in double-pulse MIG welding of aluminum alloy[J]. Transactions of the China Welding Institution, 2009, 30(3): 69-72.[5] Liu A H, Tang X H, Lu F G. Study on welding process and prosperities of AA5754 Al-alloy welded by double pulsed gas metal arc welding[J]. Materials & Design, 2013, 50(17): 149-155.[6] Liu A H, Tang X H, Lu F G. Arc profile characteristics of Al alloy in double-pulsed GMAW[J]. Int. J. Adv. Manuf Technol, 2013, 65: 1-7.[7] 刘长军, 刘政军, 阮祥钢, 等. 焊后热处理对AA7075铝合金DP-MIG焊接接头组织及力学性能的影响[J]. 焊接学报, 2016, 37(10): 81-84.Liu Changjun, Liu Zhengjun, Ruan Xianggang,et al. Effect of post-weld heat treatment on microstructure and mechanical properties of welded joint of 7075 aluminum alloy by double-pulsed metal inert-gas welding process[J]. Transactions of the China Welding Institution, 2016, 37(10): 81-84.[8] Sindo K. Welding metallurgy[M]. New Jersey: John Wiley & Sons, 2003.[9] Agarwal H, Gokhale A M, Graham S. Void growth in 6061-aluminum alloy under triaxial stress state[J]. Materials Science and Engineering A, 2003(341): 35-42. -
期刊类型引用(10)
1. 赵新成，杨军，赵泳林，李函，韩冰源. 焊接过程中热输入对铝合金焊接质量的影响及其控制. 江苏理工学院学报. 2025(01): 87-98 . 
百度学术
2. 林茜，许敏，朱雯静，李文强，姚屏，梁道赞. 工业机器人铝合金双脉冲MIG焊工艺参数匹配对焊缝的影响. 自动化与信息工程. 2023(04): 33-40+45 . 百度学术
3. 宋刚，刘振夫，程继文，刘黎明. 6061-T6铝合金激光诱导电弧焊轧复合成形组织性能. 航空学报. 2022(02): 195-202 . 百度学术
4. 范越. 手工焊焊接速度在线检测技术研究. 电焊机. 2022(09): 81-85+112 . 百度学术
5. 陈鑫，杨立飞，王佳宁，张冠宸，司徒德蓉. 6061-T6铝合金薄板双脉冲MIG焊动态组合热源模型. 湖南大学学报(自然科学版). 2022(12): 83-91 . 百度学术
6. 戴丽芳，孔华，孙禄帅，巩全军. 轨道交通用6082-T6铝合金MIG焊接接头组织与疲劳性能. 内燃机与配件. 2020(20): 76-77 . 百度学术
7. 龚淼，戴士杰，王志平，王立文. 航空压气机叶片增材修复最优热输入分析. 焊接学报. 2020(08): 39-47+99 . 本站查看
8. 陈琪昊，崔山成，林三宝，高翔，张澳. 超声频脉冲电信号耦合前后铝合金TIG堆焊接头特点. 焊接学报. 2020(10): 42-46+99-100 . 本站查看
9. 黄绍服，曹鑫，茅卫东，李盛良，李君. 热输入对铝合金双脉冲MIG焊气孔缺陷的影响. 安徽理工大学学报(自然科学版). 2020(05): 8-12 . 百度学术
10. 董晓晶，李桓，杨立军，梁裕. 铝合金多股复合焊丝脉冲MIG焊接接头组织与性能分析. 焊接学报. 2019(11): 61-67+163-164 . 本站查看
其他类型引用(16)
计量
- 文章访问数: 852
- HTML全文浏览量: 12
- PDF下载量: 1
- 被引次数: 26
下载:
