高温合金活性剂激光微焊接接头的组织性能研究

谢吉林; 陈玉华; 越祖朕

doi:doi:10.11884/hplpb201527.024158

强激光与粒子束, 2015, 27 (2): 024158, 网络出版: 2015-02-15

高温合金活性剂激光微焊接接头的组织性能研究

Research on microstructures and mechanical properties of superalloy joints welded by active micro-laser welding

论文大纲

谢吉林 ^*陈玉华越祖朕

作者单位

南昌航空大学航空制造工程学院, 江西南昌 330063

激光微焊接活性剂 GH4169高温合金组织性能 micro-laser welding active flux GH4169 superalloy microstructures properties

摘要

采用配方均匀设计法,配制了SiO2-MnO2-CaO-TiO2-CaF2-NaF多组元活性剂,利用微型脉冲激光器对500 μm厚GH4169高温合金进行了活性剂激光焊接试验。分析并讨论了焊接接头的显微组织和力学性能。试验结果表明,与传统激光焊相比,所配制的20种活性剂均增加了焊缝熔深,并且其中F12系混合活性剂增加熔深能力最为显著,使焊缝深宽比增加了159%,证明通过使用活性剂来增加微激光焊焊缝熔深,降低高温合金板激光焊接的成本是可行的。在活性剂作用下,焊缝显微组织仍由柱状晶和等轴晶组成,接头抗拉强度达到927 MPa,为母材强度的92.7%。

Abstract

Six kinds of analytically pure compounds, SiO2, MnO2, CaO, TiO2, CaF2, and NaF, were used to make multi-component active fluxes. 500 μm thick of GH4169 superalloy sheets were welded by active laser welding process using micro pulse laser equipment. Effects of fluxes on microstructure and mechanical properties of the joints were investigated and discussed. The results showed that the weld bead penetration was increased by all 20 series of active fluxes compared with conventional laser welding. The effect of series F12 was especially notable and the increment of depth to width ratio of the weld was 159%. It is feasible to increase weld penetration thus to improve welding efficiency and reduce welding consumption using active fluxes. Microstructures in active laser welding seams were columnar and equiaxed grains and the joint tensile strength is 927 MPa, which was 92.7% of the base metal strength.

参考文献

[1] Huang Qianyao, Li Hankang. Superalloys［M］. Beijing: Metallurgical Industry Press, 2000.

[2] Hong J K, Park J H, Parka N K. Microstructures and mechanical properties of Inconel 718 welds by CO2 laser welding［J］. Journal of Materials Processing Technology, 2008, 201: 515-520.

[3] Hailat M M, Mian A, Chaudhury Z A. Laser micro-welding of aluminum and copper with and without tin foil alloy［J］. Micro System Technology, 2012, 18: 103-112.

[4] Chan C W, Man H C. Laser welding of thin foil nickel-titanium shape memory alloy［J］. Optics and Lasers in Engineering, 2011, 49: 121-126.

[5] Li Fei, Kong Xiaofang, Wu Shikai, et al. Fiber laser-TIG hybrid welding process of 5083 aluminum alloy［J］.High Power Laser and Particle Beams, 2014, 26: 039003.

[6] Li Guihua, Zou Yong, Zou Zengda, et al. In-stiu synthesis of Nd(C,N) ceramic particulates reinforced Fe based composite coatings by laser cladding［J］. High Power Laser and Particle Beams, 2012, 24(11): 2735-2740.

[7] Gong Weihuai, Chen Yuhua, Ke Liming. Microstructures and properties of laser micro welded joint of TiNi shape memory alloy［J］. Transactions of Nonferrous Metals Society of China, 2011, 21: 2044-2048.

[8] Wu Jianguo. The industrialization road of high power laser equipment in China［C］//The Tenth Annual Conference of China Association for Science and Technology Forum. 2008.

[9] Zhang Hong, Yang Chunping. Li Wei, et al. Characteristics of high-power all-fiber laser［J］. High Power Laser and Particle Beams, 2012, 24(6): 1287-1289.

[10] Qin Guoliang, Wang Guogang, Zou Zengda. Effects of activating flux on CO2 laser welding process of 6013 Al alloy［J］. Transactions of Nonferrous Metals Society of China, 2012, 22: 23-29.

[11] Kaul R, Ganesh P, Singh N. Effect of active flux addition on laser welding of austenitic stainless steel［J］. Science and Technology of Welding and Joining. 2007, 12: 127-137.

[12] Chen Li, Hu Lunji, Gong Shuili. Research on welding with active flux［J］. New Technology New Process, 2005, 17: 39-41.

[13] Fang Kaitai, Ma Changxing. Uniform and Orthogonally Design［M］. Beijing: Science Press, 2001.

谢吉林, 陈玉华, 越祖朕. 高温合金活性剂激光微焊接接头的组织性能研究[J]. 强激光与粒子束, 2015, 27(2): 024158. Xie Jilin, Chen Yuhua, Yue Zuzhen. Research on microstructures and mechanical properties of superalloy joints welded by active micro-laser welding[J]. High Power Laser and Particle Beams, 2015, 27(2): 024158.

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