薄板钛合金光纤激光钨极惰性气体保护焊电弧复合焊接工艺研究

马然; 董皕喆; 吴世凯; 杨武雄; 肖荣诗

doi:doi:10.3788/cjl201441.0503003

中国激光, 2014, 41 (5): 0503003, 网络出版: 2014-04-16

薄板钛合金光纤激光钨极惰性气体保护焊电弧复合焊接工艺研究

Study on Fiber Laser-Tungsten Inert Gas Hybrid Welding of Titanium Sheet

论文大纲

马然 ^*董皕喆吴世凯杨武雄肖荣诗

作者单位

北京工业大学激光工程研究院, 北京 100124

激光技术光纤激光复合焊接 TC4钛合金焊缝成形接头性能 laser technique fiber laser hybrid welding TC4 titanium weld bead formation mechanical properties

摘要

针对1 mm厚TC4钛合金薄板进行光纤激光-钨极惰性气体保护焊(TIG)电弧复合焊接试验，研究了激光功率、电弧电流、热源间距、保护气成分等工艺参数对焊缝成形的影响，同时分析了焊接接头的显微组织及力学性能。研究结果表明：随着电弧电流增加、主保护气中He气比例升高，焊缝的熔化量逐渐增加；随着激光功率和两热源间距的增加，焊缝熔化量呈波动性变化。焊缝咬边程度和复合热源的热输入有关，输入的能量越大越集中，焊缝咬边深度越小。焊接保护效果主要由电弧输入的热量决定，输入的热量越大，保护效果越差。在优化的工艺参数下，复合焊接的接头抗拉强度高于母材，延伸率低于母材，这与焊缝中马氏体组织的分布有关，拉伸断裂位于母材。

Abstract

Fiber laser-tungsten inert gas (TIG) hybrid welding is applied to TC4 sheet with the thickness of 1 mm. The influences of welding parameters such as laser power, arc current, the distance of heat sources and the shielding gas on weld bead formation are studied. The metallographic structure and mechanical properties are also analyzed. The results indicates that with the increasing of arc current and the ratio of He in main shielding gas, the welding fusion area gradually increases. With the increasing of laser power and the distance of heat sources, the welding fusion area changes in fluctuation. The tendency of undercut is related to the heat input of hybrid heat sources. With the rising of concentration and input of the energy, the undercut depth on the back side of the welding seam decreases. The efficiency of shielding is mainly determined by the heat input of arc. The more input heat is, the poorer protective effect is. The tensile strength of hybrid welding joint under optimum welding conditions is larger than the base metal, and the elongation is smaller than the base metal. This is related to the distribution of martensite in the welding seam. The fracture takes place in the base metal.

参考文献

[1] 刘奇先, 刘扬, 高凯. 钛合金的研究进展与应用[J]. 航天制造技术, 2011. 45-48.

Liu Qixian, Liu Yang, Gao Kai. Research process and application of titanium alloys[J]. Aeronautical Manufacturing Technology, 2011. 45-48.

[2] Akman E, Demir A, Canel T, et al.. Laser welding of Ti6AL4V titanium alloys[J]. Journal of Materials Processing Technology, 2009, 209(8): 3705-3713.

[3] Zhang Y, Sato Y S, Kokawa H, et al.. Microstructural characteristics and mechanical properties of Ti-6AL-4V friction stir welds[J]. Materials Science and Engineering A, 2008, 485(1-2): 448-455.

[4] Mesharam S D, Mohandas T A. Comparative evaluation of friction and electron beam welds of near-α titanium alloy[J]. Materials and Design, 2010, 31(4): 2245-2252.

[5] Fellman A, Salminen A. Study of the phenomena of fiber laser-MAG hybrid welding[C]. In Proceedings of 26th international congress on applications of lasers and electro-optics (ICALEO), 2007. 871-880.

[6] Steen W M. Arc auegmented laser processing of materials[J]. Journal of Applied Physics, 1980, 51(11): 5636-5641.

[7] 崔丽, 贺定勇, 李晓延, 等. 光纤激光-MIG复合焊参数对钛合金焊缝成形的影响[J]. 航空制造技术, 2009, (10): 120-125.

Cui Li, He Dingyong, Li Xiaoyan, et al.. Effect of welding parameter on weld shape in fiber laser-MIG hybrid welding of titanium alloy[J]. Aeronautical Manufacturing Technology, 2009, (10): 120-125.

[8] Murakami T, Nakata K, Yamamoto N, et al.. Formation of one pass fully-penetrated weld bead of titanium plate by fiber laser and MIG arc hybrid welding[J]. Materials Transactions, 2012, 53(5): 1017-1021.

[9] Boyer R, Welsch G, Collings E W. Materials Properties Handbook: Titanium Alloys[M]. USA: Materials Park, 1994. 159.

[10] 赵耀邦, 雷正龙, 陈彦宾. 不锈钢激光电弧双面焊接头熔化特征分析[J]. 中国激光, 2011, 38(2): 0203001.

Zhao Yaobang, Lei Zhenglong, Chen Yanbin. Analysis of melting characteristics of laser-arc double-sided welding for stainless steel[J]. Chinese J Lasers, 2011, 38(2): 0203001.

[11] 赵子强. 激光-TIG电弧复合焊接等离子体形态与焊缝特征的研究[D]. 北京: 北京工业大学, 2011. 38.

Zhao Ziqiang. Study on Plasma Shape and Weld Characteristic During Laser-TIG Hybrid Welding[D]. Beijing: Beijing University of Technology, 2011. 38.

[12] 崔丽, 贺定勇, 李晓延, 等. 焊接方向对光纤激光-MIG复合焊接钛合金焊缝成形的影响[J]. 中国激光, 2011, 38(1): 0103002.

Cui Li, He Dingyong, Li Xiaoyan, et al.. Effects of welding direction on weld shape of fiber laser-MIG hybrid welded titanium alloys[J]. Chinese J Lasers, 2011, 38(1): 0103002.

[13] H Hitoshi, I Takashi, K Shigeharu, et al.. Effect of shielding gas and laser wavelength in laser welding of magnesium alloy sheet[J]. Quarterly J Japan Welding Society, 2001, 19(4): 591-599.

[14] 曹娜.钛合金激光焊接工作头研制[D]. 北京: 北京工业大学, 2006. 3.

Cao Na. The Study on Working Head for Titanium Laser Welding[D]. Beijing: Beijing University of Technology, 2006. 3.

[15] 徐洁洁. TC4钛合金激光焊接接头组织性能研究[D]. 北京: 北京工业大学, 2009. 15.

Xu Jiejie. Research on Microstructures and Properties of Laser Welding Joints of TC4 Titanium Alloy[D]. Beijing: Beijing University of Technology, 2009. 15.

[16] 方俊飞. 薄板激光深熔焊接熔透模式的机理研究[D]. 哈尔滨: 哈尔滨工业大学, 2007. 62.

Fang Junfei. Study on the Mechanism of Penetration Mode for Thin Sheet Laser Deep Penetration Welding[D]. Harbin: Harbin Institute of Technology, 2007. 62.

[17] 张盛海, 沈以赴, 朱作军. 铝合金CO2激光深熔焊接过程中等离子体的热力学行为研究[J]. 中国激光, 2012, 39(s1): s103008.

Zhang Shenghai, Shen Yifu, Zhu Zuojun. Thermodynamic study on laser-induced plasma in CO2 laser welding of aluminum alloy[J]. Chinese J Lasers, 2012, 39(s1): s103008.

[18] 殷树言. 气体保护焊工艺基础及应用[M]. 北京: 机械工业出版社, 2012. 9.

Yin Shuyan. The Base Theory and Application of Gas Shielded Welding[M]. Beijing: China Machine Press, 2012. 9.

[19] 沈以赴, 张盛海. 激光深熔焊接技术的研究与动向[J]. 中国激光, 2012, 39(s1): s103002.

Shen Yifu, Zhang Shenghai. Current research status and development trends of laser welding[J]. Chinese J Lasers, 2012, 39(s1): s103002.

[20] 冯雷, 陈树君, 殷树言. 高速焊接时焊缝咬边的形成机理[J]. 焊接学报, 1999, 20(1): 16-21.

Feng Lei, Chen Shujun, Yin Shuyan. Mechanism of undercut phenomenon in high speed welding[J]. Transactions of the China Welding Institution, 1999, 20(1): 16-21.

[21] 卢振洋. 焊缝咬边形成机理及高速焊工艺研究[D]. 北京: 北京工业大学, 2006. 69.

Lu Zhenyang. Research on the Mechanism of Undercut Formation and High Speed Welding Technology[D]. Beijing: Beijing University of Technology, 2006. 69.

[22] C 莱茵斯, M 皮特尔斯.钛与钛合金[M]. 北京: 化学工业出版社, 2006. 13.

C Leyens, M Peters. Titanium and Titanium Alloys[M]. Beijing: Chemical Industry Press, 2006. 13.

马然, 董皕喆, 吴世凯, 杨武雄, 肖荣诗. 薄板钛合金光纤激光钨极惰性气体保护焊电弧复合焊接工艺研究[J]. 中国激光, 2014, 41(5): 0503003. Ma Ran, Dong Bizhe, Wu Shikai, Yang Wuxiong, Xiao Rongshi. Study on Fiber Laser-Tungsten Inert Gas Hybrid Welding of Titanium Sheet[J]. Chinese Journal of Lasers, 2014, 41(5): 0503003.

薄板钛合金光纤激光钨极惰性气体保护焊电弧复合焊接工艺研究

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