• Infrared and Laser Engineering
  • Vol. 52, Issue 2, 20220350 (2023)
Zhengwei Yang1, Jinshu Chen1, Gan Tian1, Wei Zhang2,*..., Jiawei Chen1 and Junling Xiao1|Show fewer author(s)
Author Affiliations
  • 1College of Missile Engineering, Rocket Force University of Engineering, Xi 'an 710025, China
  • 2School of Intelligent Manufacturing and Electrical Engineering, Guangzhou Institute of Science and Technology, Guangzhou 510850, China
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    DOI: 10.3788/IRLA20220350 Cite this Article
    Zhengwei Yang, Jinshu Chen, Gan Tian, Wei Zhang, Jiawei Chen, Junling Xiao. Study on welding pool behavior and joint mechanical properties of 2195-T8 Al-Li alloy by laser wire filling double-sided welding[J]. Infrared and Laser Engineering, 2023, 52(2): 20220350 Copy Citation Text show less
    Boundary setting of computing domain
    Fig. 1. Boundary setting of computing domain
    Diagram of welding wire melting into pool
    Fig. 2. Diagram of welding wire melting into pool
    Flow field diagram of molten pool
    Fig. 3. Flow field diagram of molten pool
    Temperature curves of molten pool measuring points
    Fig. 4. Temperature curves of molten pool measuring points
    2195-T8 Al-Li alloy plate
    Fig. 5. 2195-T8 Al-Li alloy plate
    Test design
    Fig. 6. Test design
    Comparison of joint cross section and metallographic diagram of weld fusion zone
    Fig. 7. Comparison of joint cross section and metallographic diagram of weld fusion zone
    Specimen tensile test
    Fig. 8. Specimen tensile test
    ParameterDensity/ kg·m−3Specific heat capacity/J·kg−1·K−1Coefficient of thermal conductivity ViscosityLatent heat of fusion/J·kg−1Modulus of elasticity/GPa
    Numerical2 710960Ref. [14] Ref. [15] 3.98×10572
    ParameterPoisson ratioCoefficient of thermal expansion/K−1Surface radiation coefficientSurface tension /N·m−1Temperature coefficient of surface tension
    Numerical0.332.23×10−50.40.7−3.5×10−4
    Table 1. Material properties of 2195-T8 Al-Li alloy and ER2319 welding wire
    Groups1234
    PositiveWelding speed/cm·min−150504545
    Wire feeding speed/m·min−11.61.81.61.8
    BackWelding speed/cm·min−150504545
    Wire feeding speed/m·min−11.61.81.61.8
    Table 2. Parameter setting of 1500 W welding test
    Alloy material composition CuLiAgZrFeMgTiAl
    Percentage of ingredients 3.7%0.8%0.2%0.1%0.1%0.2%0.068%Balance
    Table 3. Chemical composition of 2195-T8 Al-Li alloy
    Welding wire material composition CuFeMnMgSiZnTiVAl
    Percentage of ingredients 5.6%0.3%0.3%0.2%0.2%0.1%0.15%0.1%Balance
    Table 4. Chemical composition of ER2319 filament filling
    Zhengwei Yang, Jinshu Chen, Gan Tian, Wei Zhang, Jiawei Chen, Junling Xiao. Study on welding pool behavior and joint mechanical properties of 2195-T8 Al-Li alloy by laser wire filling double-sided welding[J]. Infrared and Laser Engineering, 2023, 52(2): 20220350
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