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Chinese Journal of Lasers, Volume. 48, Issue 10, 1002001(2021)

Microstructures and Fracture Toughness of Annealed AlSi10Mg Alloy Formed by Selective Laser Melting

Pengjun Tang1,2,3, Taiqi Yan2, Peiyong Li1,2,3, Shaoqing Guo2, Ruikun Chu4, and Bingqing Chen2、*
Author Affiliations
  • 1Institute of Aluminum Alloy, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
  • 23D Printing Research and Engineering Technology Center, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
  • 3Beijing Engineering Research Center of Advanced Aluminum Alloys and Applications, Beijing 100095, China
  • 4Falcon Fast Manufacturing Technology Co., Ltd., Wuxi, Jiangsu 214145, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (25)
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    Figures & Tables(9)
    Schematic of scanning strategy for selective laser melting

    Fig. 1. Schematic of scanning strategy for selective laser melting

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    Sketch map of tensile samples and compact tensile specimens

    Fig. 2. Sketch map of tensile samples and compact tensile specimens

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    Microstructures of annealed alloy. (a) Parallel to building direction; (b) perpendicular to building direction

    Fig. 3. Microstructures of annealed alloy. (a) Parallel to building direction; (b) perpendicular to building direction

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    SEM morphologies of annealed alloy. (a) Parallel to building direction; (b) perpendicular to building direction

    Fig. 4. SEM morphologies of annealed alloy. (a) Parallel to building direction; (b) perpendicular to building direction

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    Grain morphology and grain boundary distribution of annealed alloy. (a) Grain morphology parallel to building direction; (b) grain morphology perpendicular to building direction; (c) grain boundary distribution parallel to building direction; (d) grain boundary distribution perpendicular to building direction

    Fig. 5. Grain morphology and grain boundary distribution of annealed alloy. (a) Grain morphology parallel to building direction; (b) grain morphology perpendicular to building direction; (c) grain boundary distribution parallel to building direction; (d) grain boundary distribution perpendicular to building direction

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    Load versus crack opening displacement curves of compact tensile specimens with different opening directions. (a) X-Y; (b) Y-Z; (c) Z-Y

    Fig. 6. Load versus crack opening displacement curves of compact tensile specimens with different opening directions. (a) X-Y; (b) Y-Z; (c) Z-Y

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    Fracture graphs of over-load zone for compact tension specimens with different opening directions. (a)(d) X-Y; (b)(e) Y-Z; (c)(f) Z-Y

    Fig. 7. Fracture graphs of over-load zone for compact tension specimens with different opening directions. (a)(d) X-Y; (b)(e) Y-Z; (c)(f) Z-Y

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    • Table 1. Calculation parameters of fracture toughness for compact tensile specimens with different opening directions

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      Table 1. Calculation parameters of fracture toughness for compact tensile specimens with different opening directions

      No.DirectionW /mmB /mma /mmb /mmRm /MPaRp0.2 /MPaσY /MPaRp0.2 /Rmm
      X-Y-1X-Y69.9734.6835.5134.46301.0187.0244.00.622.20
      X-Y-269.9835.2035.3834.60
      Y-Z-1Y-Z70.0135.1035.8434.17301.0187.0244.00.622.20
      Y-Z-269.9834.9735.5334.45
      Z-Y-1Z-Y69.9935.0035.5534.44300.5188.3244.40.632.20
      Z-Y-270.0135.0135.7734.24

    • Table 2. Test results of compact tensile specimens with different opening directions

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      Table 2. Test results of compact tensile specimens with different opening directions

      No.DirectionFQ /kNKQ /(MPam)2.5(KQ/Rp0.2)2 /mmFmax /kNFmax /FQJ /(kJ·m-2)CTOD /mm
      X-Y-1X-Y38.7441.81124.9747.7031.23436.060.81
      X-Y-239.0341.24121.5948.1191.23430.000.80
      Y-Z-1Y-Z38.2641.32122.0646.8191.22429.640.80
      Y-Z-238.0840.75118.7247.0981.24431.600.81
      Z-Y-1Z-Y36.3541.00118.5243.6731.20252.150.47
      Z-Y-234.7237.4899.0541.5791.20251.300.47
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    Pengjun Tang, Taiqi Yan, Peiyong Li, Shaoqing Guo, Ruikun Chu, Bingqing Chen. Microstructures and Fracture Toughness of Annealed AlSi10Mg Alloy Formed by Selective Laser Melting[J]. Chinese Journal of Lasers, 2021, 48(10): 1002001

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    Paper Information

    Category: laser manufacturing

    Received: Oct. 23, 2020

    Accepted: Nov. 19, 2020

    Published Online: May. 18, 2021

    The Author Email: Bingqing Chen (hwtkjcbq1984@163.com)

    DOI:10.3788/CJL202148.1002001

    Topics

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