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Laser & Optoelectronics Progress, Volume. 57, Issue 5, 051403(2020)

Effect of Process Parameters on the Deformation of Selective Laser Melting

Maoliang Wu*, Hanting Sun, Xuankai Sun, Zhongjun Liu, and Rurun Li
Author Affiliations
  • College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (14)
    Cited By (2)
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    Figures & Tables(11)
    Placement of part. (a) Horizontal direction; (b) vertical direction

    Fig. 1. Placement of part. (a) Horizontal direction; (b) vertical direction

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    Deformation of different β at vertical direction

    Fig. 2. Deformation of different β at vertical direction

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    Deformation of different α at horizontal direction

    Fig. 3. Deformation of different α at horizontal direction

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    Thermal stress simulation of α=0°,β=90°

    Fig. 4. Thermal stress simulation of α=0°,β=90°

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    Deformation before and after cutting with the same angle

    Fig. 5. Deformation before and after cutting with the same angle

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    Experimental results of two groups. (a) β=0°; (b) α=45°

    Fig. 6. Experimental results of two groups. (a) β=0°; (b) α=45°

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    • Table 1. Machining parameters

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      Table 1. Machining parameters

      Layer thicknessL1 /mmSlicing stripewidth L2 /μmHatch spacingL3 /μmPower P /WScanning speedv /(mm·s-1)Baseplatetemperature T /℃
      0.04820029586060

    • Table 2. Material parameters

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      Table 2. Material parameters

      PowderabsorptivitySolidabsorptivityThermal expansioncoefficient α /K-1Elastic ratioE /GPaPoissonratioMaterial yieldstrength R /MPa
      0.760.450.00001651850.25530

    • Table 3. Maximum deformation at different angles

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      Table 3. Maximum deformation at different angles

      β /(°)Maximum deformation /(10-2 mm)
      a=0°a=15°a=30°a=45°a=60°a=75°a=90°
      02.37692.16602.16262.16062.16922.16872.1639
      152.68022.15642.15572.14542.15442.15532.1503
      302.81572.17522.16722.16702.16722.16882.1668
      452.72252.18022.16722.16352.16382.16592.1636
      602.20962.18432.16832.16012.16352.16322.1641
      751.95152.18632.16832.15732.16362.16412.1642
      901.54912.18032.16562.16132.16392.16392.1639

    • Table 4. Maximum deformation at β=0°

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      Table 4. Maximum deformation at β=0°

      α /(°)0153045607590
      Deformation /(10-2 mm)5.0385.0365.0345.0195.0245.0255.026

    • Table 5. Maximum deformation at α=45°

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      Table 5. Maximum deformation at α=45°

      β /(°)0153045607590
      Deformation /(10-2 mm)5.0195.0075.0095.0155.0185.0205.021
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    Maoliang Wu, Hanting Sun, Xuankai Sun, Zhongjun Liu, Rurun Li. Effect of Process Parameters on the Deformation of Selective Laser Melting[J]. Laser & Optoelectronics Progress, 2020, 57(5): 051403

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Jul. 3, 2019

    Accepted: Sep. 2, 2019

    Published Online: Mar. 5, 2020

    The Author Email: Maoliang Wu (wumaoliang@shiep.edu.com)

    DOI:10.3788/LOP57.051403

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology