Chinese Journal of Lasers, Volume. 49, Issue 14, 1402105(2022)

Microstructure and Properties of BCC-Based Refractory High-Entropy Alloy by Laser Additive Manufacturing

Yizhen Zhao, Hang Zhang, Jianglong Cai*, Xiaoyu Sun, Jiale Geng, Lin Wang, Xuebo Xu, and Dichen Li**
Author Affiliations
  • School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
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    Figures & Tables(8)
    Morphology and particle size distribution of spherical powder. (a) Morphology of Nb powder; (b) morphology of Mo powder; (c) morphology of Ta powder; (d) morphology of Ti powder; (e) morphology of Ni powder; (f) particle size distribution of spherical powder
    BSD images of polished surface of RHEA01 SLM molding. (a) Macroscopic morphology; (b) microscopic morphology
    Comparison of XRD curves of RHEA01 and NbMoTa HEAs
    Surface energy spectrum of RHEA01
    EBSD image of RHEA01
    Mechanical properties of RHEA01. (a) Compressive properties of RHEA01; (b) comparison of compressive properties of RHEA01 with those in existing researches; (c) comparison of compressive properties of RHEA01 with those of NbMoTa (VAM) and RHEA02; (d) dynamic compression curve of RHEA01
    • Table 1. Theoretical compositions of RHEA01 HEA

      View table

      Table 1. Theoretical compositions of RHEA01 HEA

      ElementNbMoTaTiNi
      Atomic fraction /%30243088
    • Table 2. Comparison of compressive properties of alloys

      View table

      Table 2. Comparison of compressive properties of alloys

      Temperature /℃AlloyYield stress /MPaStress /MPaStrain /%Hardness /HV
      25NbMoTa1252.561282.9415.00423.62±17.90
      RHEA021750.462277.7915.00628.40±11.40
      RHEA011277.351597.629.50511.76±16.50
      NbMoTa(VAM)999.001167.002.50510.00±10.50
      600RHEA021279.341669.7528.42 
      RHEA011131.421207.218.00 
      800RHEA02756.921033.6328.00 
      RHEA01693.341150.5310.00 
      1000NbMoTa(VAM)712.85920.323.80 
      RHEA02554.61651.3611.00 
      RHEA01724.45993.8410.00 
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    Yizhen Zhao, Hang Zhang, Jianglong Cai, Xiaoyu Sun, Jiale Geng, Lin Wang, Xuebo Xu, Dichen Li. Microstructure and Properties of BCC-Based Refractory High-Entropy Alloy by Laser Additive Manufacturing[J]. Chinese Journal of Lasers, 2022, 49(14): 1402105

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    Paper Information

    Received: Dec. 16, 2021

    Accepted: Mar. 7, 2022

    Published Online: Jun. 14, 2022

    The Author Email: Cai Jianglong (cjl3119301479@stu.xjtu.edu.cn), Li Dichen (dcli@mail.xjtu.edu.cn)

    DOI:10.3788/CJL202249.1402105

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