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DOU Enhui, WU Bing, CHEN Li, YANG Xinqi, HU Zhongli. Study on the microstructure and mechanical properties of 2A97 Al-Li alloys laser beam welded T-joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(11): 147-154. DOI: 10.12073/j.hjxb.2019400302
Citation: DOU Enhui, WU Bing, CHEN Li, YANG Xinqi, HU Zhongli. Study on the microstructure and mechanical properties of 2A97 Al-Li alloys laser beam welded T-joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(11): 147-154. DOI: 10.12073/j.hjxb.2019400302
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Study on the microstructure and mechanical properties of 2A97 Al-Li alloys laser beam welded T-joints

  • 1.

    Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300350, China;AVIC Manufacturing Technology Institute, Beijing 100024, China

  • 2.

    AVIC Manufacturing Technology Institute, Beijing 100024, China

  • 3.

    Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300350, China

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  • Received Date: October 30, 2018
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    • Abstract
  • Successive mode and simultaneous mode were used in two-side and two-beam DISK laser welding for T-joints of 1.5 mm-thickness 2A97-T3 aluminum-lithium alloy, and the microstructure, hardness distribution and tensile properties of T-joints obtained by two modes were investigated in comparison. The results show that, for simultaneous-mode joints and the heat conduction welding side in successive-mode joints, the fusion zone (FZ) micro-hardness are 61%-67% of base metal's (BM). The softening of FZ is attributed to the dissolution of the precipitate phase. However, the micro-hardness of the deep penetration weld in successive-mode joints is higher, indicating that the heat conduction welding process has a strengthening effect on the deep penetration weld. The tensile strength of the skin and the stringer of successive welding T-joints reach 415 and 337 MPa respectively, approximately 84.8% and 68.9% of the BM's, while that of simultaneous welding T-joints are 90.6% and 59.4% of the BM's respectively. For successive-mode T joints, the fracture occurs in transition zone (TZ) on the side of heat conduction weld, indicating that TZ on the side of heat conduction weld is the weakest part in T-joints.
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    • References (12)
  • 杨守杰, 卢健, 冯朝辉, 等. 铝锂合金历史回顾与在中国的研究发展[J]. 材料导报, 2014(s2):430-435 Yang Shoujie, Lu Jian, Feng Chaohui, et al. The history of Al-Li alloys and the research development in China[J]. Materials Review, 2014(s2):430-435
    Kostrivas A, Lippold J C. Weldability of Li-bearing aluminium alloys[J]. International Materials Reviews, 2013, 44(6):217-237.
    黄敏, 李国爱, 张坤, 等. 2A97铝锂合金激光焊接特性[J]. 焊接学报, 2014, 35(5):100-104 Huang Min, Li Guoai, Zhang Kun, et al. Laser welding characteristics of 2A97 Al-Li alloy[J]. Transactions of the China Welding Institution, 2014, 35(5):100-104
    Fu B, Qin G, Meng X, et al. Microstructure and mechanical properties of newly developed aluminum-lithium alloy 2A97 welded by fiber laser[J]. Materials Science & Engineering A, 2014, 617:1-11.
    Ning J, Zhang L J, Bai Q L, et al. Comparison of the microstructure and mechanical performance of 2A97 Al-Li alloy joints between autogenous and non-autogenous laser welding[J]. Materials & Design, 2017, 120:144-156.
    罗昆, 常明, 陈俐, 等. 激光填丝焊接铝锂合金T型接头的组织和力学性能[J]. 热加工工艺, 2017(1):77-80 Luo Kun, Chang Ming, Chen Li, et al. Microstructure and mechanical properties of Al-Li alloy laser welding T-joint with filler wire[J]. Hot Working Technology, 2017(1):77-80
    李昊, 陈洁, 陈磊, 等. 双光束激光焊接技术在民用飞机上的应用现状及发展[J]. 航空制造技术, 2012, 417(21):50-53 Li Hao, Chen Jie, Chen Lei, et al. Existing state and development on dual laser-beam bilateral welding technology used in civil aircraft[J]. Aeronautical Manufacturing Technology, 2012, 417(21):50-53
    杨武雄, 张心怡, 肖荣诗, 等. 2060-T8/2099-T83铝锂合金T型接头双光束激光焊接工艺[J]. 中国激光, 2013, 40(7):83-87 Yang Wuxiong, Zhang Xinyi, Xiao Rongshi. Dual-beam laser welding of T-joint of aluminum-lithium alloy 2060-T8/2099-T83[J]. Chinese Journal of Lasers, 2013, 40(7):83-87
    Ma X, Gong S, Zhang J, et al. Formation, microstructure and mechanical properties of double-sided laser beam welded Ti-6Al-4V T-joint[J]. Transactions of Nonferrous Metals Society of China, 2016, 26(3):729-735.
    陈彦宾, 杨志斌, 陶汪, 等. 铝合金T型接头双侧激光同步焊接组织的特征及力学性能[J]. 中国激光, 2013, 40(5):106-112 Chen Yanbin, Yang Zhibin, Tao Wang, et al. Microstructure characteristics and mechanical properties of double-sided laser beam welded aluminum alloy T-joints[J]. Chinese Journal of Lasers, 2013, 40(5):106-112
    Han B, Tao W, Chen Y, et al. Double-sided laser beam welded T-joints for aluminum-lithium alloy aircraft fuselage panels:Effects of filler elements on microstructure and mechanical properties[J]. Optics & Laser Technology, 2017, 93:99-108.
    Yang Z, Zhao X, Tao W, et al. Comparative study on successive and simultaneous double-sided laser beam welding of AA6056/AA6156 aluminum alloy T-joints for aircraft fuselage panels[J]. International Journal of Advanced Manufacturing Technology, 2018, 97(1-4):845-856.
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