强激光与粒子束, 2014, 26 (3): 039003, 网络出版: 2014-03-31   

5083铝合金光纤激光-TIG复合焊接工艺研究

Fiber laser-TIG hybrid welding process of 5083 aluminum alloy
作者单位
北京工业大学 激光工程研究院, 北京 100124
摘要
采用IPG YLS-6000光纤激光器和Fronius MagicWave3000job数字化焊机,对4 mm厚5083 H116铝合金进行了复合焊接试验。研究了电源特性、电流大小和热源间距等工艺参数对光纤激光-钨极惰性气体保护焊(TIG)复合焊接焊缝成形的影响规律,并分析了焊接接头的缺陷、显微硬度及力学性能。结果表明,光纤激光-TIG复合焊接5083铝合金,能够明显改善焊缝成形,提高焊接过程稳定性,特别是与变极性TIG电弧复合效果更为显著;光纤激光与变极性TIG电弧复合焊接,采用激光在前的方式,电弧电流150 A,且热源间距不大于4 mm,可以得到具有明亮金属光泽和均匀鱼鳞纹的焊缝,焊缝无气孔和裂纹缺陷,其表面有少量的下凹;复合焊接接头抗拉强度为318 MPa,达到母材强度的93%,延伸率为7.6%,高于单光纤激光焊接,断口分析为韧性断裂。
Abstract
An IPG YLS-6000 fiber laser and a Fronius MagicWave3000job digital welding machine are used in fiber laser-tungsten inert gas (TIG) hybrid welding. The experiment is carried out on the aluminum alloy 5083H116 with a thickness of 4 mm. The effects of characteristic of power source, arc current and distance between heat sources on weld shape of hybrid welding are studied. The welding defect, microhardness and mechanical properties of welded joints are analyzed. The results show that, weld formation is improved while using fiber laser-TIG hybrid welding, especially with variable polarity TIG arc. A good weld can be obtained when the distance between heat sources is less than 4 mm, the arc current is 150 A, and the welding mode is laser leading (LL) arc style. The weld has few pores and no cracks, and the surface is bright and uniform only with a little sag. The tensile strength of hybrid-welded joint is up to 318 MPa, about 93% of base metal, and the joint elongation is 7.6%; both are higher than those in fiber laser welding. The tensile fracture is ductile.
参考文献

[1] 潘复生,张丁非.铝合金及应用[M].北京:化学工业出版社, 2006:312-319.(Pan Fusheng, Zhang Dingfei. Aluminum alloy and application. Beijing: Chemical Industry Press, 2006:312-319)

[2] 祁俊峰,牛振,张冬云,等.CO2激光焊接船用铝合金T型材的焊缝成形控制[J].中国激光, 2008, 35(2):297-302.(Qi Junfeng, Niu Zhen, Zhang Dongyun, et al. Control of shaping of welds for CO2 laser welding shipbuilding T-section aluminum alloy. Chinese Journal of Lasers, 2008, 35(2):297- 302)

[3] 孔晓芳,李飞,吴世凯,等.5083铝合金光纤激光焊接工艺研究[J].中国激光, 2013, 40:s103005.(Kong Xiaofang, Li Fei, Wu Shikai, et al. Study on fiber laser welding of 5083 aluminum alloy. Chinese Journal of Lasers, 2013, 40:s103005)

[4] Yu Yangchun, Wang Chunming, Hu Xiyuan, et al. Porosity in fiber laser formation of 5A06 aluminum alloy[J]. Journal of Mechanical Science and Technology, 2010, 24(5):1077-1082.

[5] 肖荣诗,吴世凯.激光-电弧复合焊接的研究进展[J].中国激光, 2008, 35(11):1680-1685.(Xiao Rongshi, Wu Shikai. Progress on laser-arc hybrid welding. Chinese Journal of Lasers, 2008, 35(11):1680-1685)

[6] Mahrle A, Beyer E. Hybrid laser beam welding-classification, characteristics, and applications[J]. Journal of Laser Applications, 2006, 18(3):169-180.

[7] Ribic B, Palmer T, Debroy T. Problems and issues in laser-arc hybrid welding[J]. International Materials Reviews, 2009, 54(4):223-244.

[8] Campana G, Ascari A, Fortunato A, et al. Hybrid laser-MIG welding of aluminum alloys: The influence of shielding gases[J]. Applied Surface Science, 2009, 255(10):5588-5590.

[9] Quintino L, Costa A, Miranda R, et al. Welding with high power fiber lasers—A preliminary study[J]. Materials & Design, 2007, 28(4):1231-1237.

[10] Kawahito Y, Mizutani M, Katayama S. Elucidation of high-power fibre laser welding phenomena of stainless steel and effect of factors on weld geometry[J]. Journal of Physics D—Applied Physics, 2007, 40(19):5854-5859.

[11] 冀翔,周朴,王小林,等.基于功率合束器的多路光纤激光自组织相干合成[J].强激光与粒子束, 2013, 25(3):607-610.(Ji Xiang, Zhou Pu, Wang Xiaolin, et al. Self-organized coherent combination of multichannel fiber lasers based on power coupler. High Power Laser and Particle Beams, 2013, 25(3):607-610)

[12] 张红,杨春平,李伟,等.高功率全光纤激光器特性[J].强激光与粒子束, 2012, 24(6):1287-1289.(Zhang Hong, Yang Chunping, Li Wei, et al. Characteristics of high-power all-fiber laser. High Power Laser and Particle Beams, 2012, 24(6):1287-1289)

李飞, 孔晓芳, 吴世凯, 肖荣诗. 5083铝合金光纤激光-TIG复合焊接工艺研究[J]. 强激光与粒子束, 2014, 26(3): 039003. Li Fei, Kong Xiaofang, Wu Shikai, Xiao Rongshi. Fiber laser-TIG hybrid welding process of 5083 aluminum alloy[J]. High Power Laser and Particle Beams, 2014, 26(3): 039003.

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