Laser & Optoelectronics Progress, Volume. 57, Issue 1, 011401(2020)

Effect of Defocusing Distance on Microstructure and Properties of Laser Welded Joint of 1Cr17Ni2 Stainless Steel Plate

Linsen Shu1,2、* and Jiasheng Wang1
Author Affiliations
  • 1College of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
  • 2Shaanxi Key Laboratory of Industrial Automation, Hanzhong, Shaanxi 723001, China
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    Figures & Tables(9)
    Schemes of welding process and preset defocusing distance
    Diagrams of making process and dimension of specimen
    Weld appearances and cross-sections under different defocusing distances. (a) -4.5 mm; (b) -5.0 mm; (c) -5.5 mm; (d) -6.0 mm
    Microstructures of welded joint. (a) Overview; (b) partial enlarged drawing
    Microstructures of heat affected zone of sample under different defocusing distances. (a) -4.5 mm; (b) -5.0 mm; (c) -5.5 mm; (d) -6.0 mm
    Tensile strength of welded joint in 1Cr17Ni2 steel plate under different defocusing distances. (a) Stress-displacement curve; (b) tensile specimen
    Hardness distribution curves of welding joint of 1Cr17Ni2 stainless steel plate under different defocusing distances. (a) Distribution of positions of hardness test points; (b) hardness distribution curves
    • Table 1. Chemical composition of 1Cr17Ni2 stainless steel

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      Table 1. Chemical composition of 1Cr17Ni2 stainless steel

      ElementCCrNiMnSPSiFe
      Mass fraction /%0.11--0.1716--181.5--2.5≤0.8≤0.03≤0.035≤0.8Bal.
    • Table 2. Orthogonal test table

      View table

      Table 2. Orthogonal test table

      Test numberFactorsTest planDepth offusion /mm
      A /AB /msC /(mm·min-1)D /mm
      11402.0250-7.0A1B1C1D10.67
      21402.4275-6.0A1B2C2D20.84
      31402.8300-5.0A1B3C3D30.92
      41502.0275-5.0A2B1C2D30.97
      51502.4300-7.0A2B2C3D10.69
      61502.8250-6.0A2B3C1D20.87
      71602.0300-6.0A3B1C3D20.82
      81602.4250-5.0A3B2C1D3>1
      91602.8275-7.0A3B3C2D10.87
      Average 10.8100.8200.8470.743
      Average 20.8430.8430.8930.843
      Average 30.8970.8870.8100.963
      Range R0.0870.0670.0830.220
      Order of factorsD>A>C>B
      Optimal levelA3B3C2D3
      OptimalcombinationA3B3C2D3
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    Linsen Shu, Jiasheng Wang. Effect of Defocusing Distance on Microstructure and Properties of Laser Welded Joint of 1Cr17Ni2 Stainless Steel Plate[J]. Laser & Optoelectronics Progress, 2020, 57(1): 011401

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    Paper Information

    Category: Lasers and Laser Optics

    Received: May. 27, 2019

    Accepted: Jul. 2, 2019

    Published Online: Jan. 3, 2020

    The Author Email: Shu Linsen (shulinsen19@163.com)

    DOI:10.3788/LOP57.011401

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