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Chinese Journal of Lasers, Volume. 49, Issue 8, 0802019(2022)

Microstructure Evolution and Nanocrystal Formation of TC4 by Laser Shock Peening

Bohan Wang1、*, Li Cheng1,2, and Dongchun Li1
Author Affiliations
  • 1Aircraft and Power Engineering Department, Aviation Engineering School, Air Force Engineering University, Xi’an, Shaanxi 710038, China
  • 2Co-Innovation Center for Advanced Aero-Engine, Beijing 100191, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (24)
    Cited By (5)
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    Figures & Tables(12)
    Microstructure of TC4 titanium alloy

    Fig. 1. Microstructure of TC4 titanium alloy

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    Impact area and light spot arrangement

    Fig. 2. Impact area and light spot arrangement

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    Phase distributions. (a) Before LSP; (b) after LSP

    Fig. 3. Phase distributions. (a) Before LSP; (b) after LSP

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    Grain size distributions. (a) Before LSP; (b) after LSP

    Fig. 4. Grain size distributions. (a) Before LSP; (b) after LSP

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    Strain distributions. (a) Before LSP; (b) after LSP

    Fig. 5. Strain distributions. (a) Before LSP; (b) after LSP

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    Eulerian images. (a) Before LSP; (b) after LSP

    Fig. 6. Eulerian images. (a) Before LSP; (b) after LSP

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    Grain boundary misalignment distributions. (a) Before LSP; (b) after LSP

    Fig. 7. Grain boundary misalignment distributions. (a) Before LSP; (b) after LSP

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    Poly figures. (a) Before LSP; (b) after LSP

    Fig. 8. Poly figures. (a) Before LSP; (b) after LSP

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    Surface TEM morphologies. (a) Before LSP; (b) after LSP; (c) high resolution image

    Fig. 9. Surface TEM morphologies. (a) Before LSP; (b) after LSP; (c) high resolution image

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    Cross-sectional TEM morphologies at different depths. (a) <1 μm; (b)～20 μm; (c)～50 μm; (d)～100 μm

    Fig. 10. Cross-sectional TEM morphologies at different depths. (a) <1 μm; (b)～20 μm; (c)～50 μm; (d)～100 μm

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    Schematics of surface nanocrystal formation mechanism

    Fig. 11. Schematics of surface nanocrystal formation mechanism

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    • Table 1. Chemical compositions of TC4 titanium alloy

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      Table 1. Chemical compositions of TC4 titanium alloy

      ElementAlVFeOCHNTi
      Mass fraction /%6.2704.0800.0480.0210.0200.0040.031Bal.
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    Bohan Wang, Li Cheng, Dongchun Li. Microstructure Evolution and Nanocrystal Formation of TC4 by Laser Shock Peening[J]. Chinese Journal of Lasers, 2022, 49(8): 0802019

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    Paper Information

    Category: laser manufacturing

    Received: Aug. 13, 2021

    Accepted: Nov. 3, 2021

    Published Online: Mar. 23, 2022

    The Author Email: Bohan Wang (dream0729ing@foxmail.com)

    DOI:10.3788/CJL202249.0802019

    Topics

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