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Chinese Journal of Lasers, Volume. 46, Issue 4, 0402009(2019)

Microstructure and Anisotropy of High Performance TC4 Obtained by Micro Forging Laser Cladding Deposition

Jinzhi Zhang1、*, Anfeng Zhang1、*, Hong Wang1, Xiaoxing Zhang2, and Yuyue Wang2
Author Affiliations
  • 1 State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
  • 2 State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
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    AbstractGet PDF(in Chinese)
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    Schematic of micro forging assisted LCD system

    Fig. 1. Schematic of micro forging assisted LCD system

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    Relationships between micro-forging process parameters and surface residual stress of formed parts. (a) Forging speed and surface residual stress; (b) amplitude and surface residual stress; (c) forging times and surface residual stress

    Fig. 2. Relationships between micro-forging process parameters and surface residual stress of formed parts. (a) Forging speed and surface residual stress; (b) amplitude and surface residual stress; (c) forging times and surface residual stress

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    Morphology of formed parts in different states. (a) Deposition state; (b) solution aging state; (c) micro forging-solution aging state

    Fig. 3. Morphology of formed parts in different states. (a) Deposition state; (b) solution aging state; (c) micro forging-solution aging state

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    Relationships between micro forging process parameters and equiaxed grain size. (a) Forging speed and equiaxed grain size; (b) amplitude and equiaxed grain size; (c) forging times and equiaxed grain size

    Fig. 4. Relationships between micro forging process parameters and equiaxed grain size. (a) Forging speed and equiaxed grain size; (b) amplitude and equiaxed grain size; (c) forging times and equiaxed grain size

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    Effect of amplitude on equiaxed grain size

    Fig. 5. Effect of amplitude on equiaxed grain size

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    Relationships between micro forging process parameters and surface roughness Ra of formed parts. (a) Forging speed and surface roughness; (b) amplitude and surface roughness; (c) forging times and surface roughness

    Fig. 6. Relationships between micro forging process parameters and surface roughness Ra of formed parts. (a) Forging speed and surface roughness; (b) amplitude and surface roughness; (c) forging times and surface roughness

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    Fracture morphology of formed parts in different directions after micro forging solution aging treatment. (a) xy direction; (b) z direction

    Fig. 7. Fracture morphology of formed parts in different directions after micro forging solution aging treatment. (a) xy direction; (b) z direction

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    Anisotropy of tensile properties of samples in different states

    Fig. 8. Anisotropy of tensile properties of samples in different states

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    Microstructures of formed parts in different states. (a) Deposition state; (b) solution aging; (c) micro forging-solution aging

    Fig. 9. Microstructures of formed parts in different states. (a) Deposition state; (b) solution aging; (c) micro forging-solution aging

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    • Table 1. Main chemical composition of TC4 powder and TC4 substrate (mass fraction, %)

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      Table 1. Main chemical composition of TC4 powder and TC4 substrate (mass fraction, %)

      ElementAlVFeOCNHTi
      TC4 powder6.034.190.10.120.020.010.001Bal.
      TC4 substrate5.964.20.20.150.080.030.001Bal.

    • Table 2. Process parameters of micro forging

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      Table 2. Process parameters of micro forging

      ParameterValue
      Forging speed /(mm·s-1)3,5,7
      Amplitude /μm20,30,40
      Forging times1,2,3
      Forging interval /mm0.6

    • Table 3. Room-temperature tensile properties of formed parts in different states

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      Table 3. Room-temperature tensile properties of formed parts in different states

      StateDirectionTensilestrength /MPaYieldstrength /MPaElongation /%Reductionof area /%
      Depositionxy114910504.313.5
      z10639601231.7
      Solution agingxy1003910.31020.3
      z1080.7988.39.829.7
      Micro forging-solution agingxy1059.5971.514.534.5
      z1105.71004.713.535.3
      HB 5432—1989895.0825.0≥8≥20
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    Jinzhi Zhang, Anfeng Zhang, Hong Wang, Xiaoxing Zhang, Yuyue Wang. Microstructure and Anisotropy of High Performance TC4 Obtained by Micro Forging Laser Cladding Deposition[J]. Chinese Journal of Lasers, 2019, 46(4): 0402009

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    Paper Information

    Category: laser manufacturing

    Received: Dec. 4, 2018

    Accepted: Jan. 8, 2019

    Published Online: May. 9, 2019

    The Author Email:

    DOI:10.3788/CJL201946.0402009

    Topics

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