Chinese Journal of Lasers, Volume. 50, Issue 8, 0802305(2023)

Microstructure and Anisotropy of Laser‑Deposited Ti65 Titanium Alloy

Xiaodan Li1, Jiaqiang Ni1, Jun Yin1, Qingyang Jiao1, Feng Guan1, Weijian Liu1, Guang Yang2, and Bo He2、*
Author Affiliations
  • 1Shenyang Aircraft Corporation, Shenyang 110850, Liaoning, China
  • 2School of Mechatronics Engineering, Shenyang Aerospace University, Shenyang 110136, Liaoning, China
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    Figures & Tables(10)
    Laser deposited Ti65 sample. (a) Schematics of laser deposited Ti65 sample and sampling for each sample; (b) photo
    Macroscopic morphologies of as-deposited sample. (a) XOY plane; (b) YOZ plane; (c) XOZ plane
    Microstructures of as-deposited sample. (a) Microstructure of XOY plane; (b) A region magnification; (c) B region magnification; (d) microstructure of XOZ plane; (e) C region magnification; (f) D region magnification
    Microstructures of annealed samples. (a) Microstructure of XOY plane; (b) XOY plane magnification; (c) microstructure of XOZ plane; (d) XOZ plane magnification
    Spheroidizing model of α lath. (a) Dislocation; (b) terminal dissolution; (c) lamella coarsening; (d) lamella spheroidization
    Microhardness of different cross-sections of Ti65 specimens
    Fracture images of different samples. (a)(b)(c) Deposited sample in Y tensile direction; (d)(e)(f) deposited sample in Z tensile direction; (g)(h)(i) annealed sample in Y tensile direction; (j)(k)(l) annealed sample in Z tensile direction
    Fracture models of different samples, where the arrows represent tensile direction and red line represents crack propagation. (a) Deposited sample in Y tensile direction; (b) deposited sample in Z tensile direction; (c) annealed sample in Y tensile direction; (d) annealed sample in Z tensile direction
    • Table 1. Nominal chemical composition of Ti65 alloy powder

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      Table 1. Nominal chemical composition of Ti65 alloy powder

      ElementMass fraction /%
      Al5.9
      Sn4
      Zr3.5
      Mo0.5
      Nb0.3
      Ta2
      Si0.4
      W0.8
      C0.06
      TiBal.
    • Table 2. Tensile data of samples in different directions before and after heat treatment

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      Table 2. Tensile data of samples in different directions before and after heat treatment

      SampleDirection

      UTS /

      MPa

      YS /

      MPa

      Elongation /

      %

      RA/

      %

      As-deposited sampleY10559598.49.6
      As-deposited sampleZ101593611.413.1
      Annealed sampleY107996510.511.8
      Annealed sampleZ102593712.714.3
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    Xiaodan Li, Jiaqiang Ni, Jun Yin, Qingyang Jiao, Feng Guan, Weijian Liu, Guang Yang, Bo He. Microstructure and Anisotropy of Laser‑Deposited Ti65 Titanium Alloy[J]. Chinese Journal of Lasers, 2023, 50(8): 0802305

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    Paper Information

    Category: Laser Additive Manufacturing

    Received: Jun. 13, 2022

    Accepted: Jul. 12, 2022

    Published Online: Mar. 28, 2023

    The Author Email: He Bo (hebo1978@163.com)

    DOI:10.3788/CJL220961

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